diff --git a/Sources/CodeCaps/PlatformLogo.swift b/Sources/CodeCaps/PlatformLogo.swift
index e9e9384..ae605c5 100644
--- a/Sources/CodeCaps/PlatformLogo.swift
+++ b/Sources/CodeCaps/PlatformLogo.swift
@@ -235,36 +235,47 @@ public enum PlatformLogoImage {
         return dir
     }()
 
-    private static let resourceNames: [String: (name: String, ext: String)] = [
-        "anthropic": ("claude", "svg"),
-        "claude": ("claude", "svg"),
-        "openai": ("openai", "svg"),
-        "codex": ("openai", "svg"),
-        "google-antigravity": ("gemini", "svg"),
-        "antigravity": ("gemini", "svg"),
-        // The two Antigravity pools are told apart by their mark as well as
-        // their name: the Gemini pool wears the colour Gemini star, and the
-        // Third-Party pool the same star as a solid one-colour glyph.
-        "google-antigravity:gemini": ("gemini-color", "png"),
-        "google-antigravity:third-party": ("gemini-mono", "svg"),
-        "gemini": ("gemini", "svg"),
-        "xai": ("grok", "svg"),
-        "grok": ("grok", "svg"),
-        "grok-cli": ("grok", "svg"),
-        "grok-bot": ("grok-bot", "svg"),
-        "minimax": ("minimax", "png"),
-        "muse": ("muse", "png"),
-        "muse-assist": ("muse-assist", "png"),
-        "muse-code": ("muse-code", "svg"),
-        "cursor": ("cursor", "svg"),
-    ]
-
-    /// Dedicated monochrome/template marks used when Light/Dark (template) style
-    /// is active, providing high-contrast silhouette rendering.
-    private static let templateResourceNames: [String: (name: String, ext: String)] = [
-        "muse-code": ("muse-code-dark", "svg"),
-        "muse": ("muse-code-dark", "svg"),
-    ]
+    /// Provider key -> mark base name.  Every base has three shipped variants:
+/// `-color` (brand colours, Standard style), `-light` (silhouette in the app's
+/// Light ink) and `-dark` (silhouette in the app's Dark ink).
+///
+/// These used to be `name, ext` pairs pointing at SVG files with a hardcoded
+/// `monochromeKeys` Set deciding which ones adapted to appearance.  Two problems
+/// that measured, not assumed: the SVGs came back as `_NSSVGImageRep`, a PRIVATE
+/// AppKit class, and the Muse rasters shipped a baked-in opaque white background.
+/// Shipping the three variants as PNG makes appearance a property of the data
+/// rather than of a guess, and puts every mark on `NSBitmapImageRep`.
+private static let resourceNames: [String: String] = [
+    "anthropic": "claude",
+    "claude": "claude",
+    "openai": "openai",
+    "codex": "openai",
+    "google-antigravity": "gemini",
+    "antigravity": "gemini",
+    // The two Antigravity pools are told apart by their mark as well as
+    // their name: the Gemini pool wears the colour Gemini star, and the
+    // Third-Party pool the same star as a solid one-colour glyph.
+    "google-antigravity:gemini": "gemini-color",
+    "google-antigravity:third-party": "gemini-mono",
+    "gemini": "gemini",
+    "xai": "grok",
+    "grok": "grok",
+    "grok-cli": "grok",
+    "grok-bot": "grok-bot",
+    "minimax": "minimax",
+    "muse": "muse",
+    "muse-assist": "muse-assist",
+    "muse-code": "muse-code",
+    "cursor": "cursor",
+]
+
+/// The file a style and appearance ask for, or `nil` when the mark is absent.
+private static func variantFile(base: String, style: MarkStyle, isDark: Bool) -> String? {
+    switch style {
+    case .standard, .custom: return "\(base)-color.png"
+    case .template: return isDark ? "\(base)-dark.png" : "\(base)-light.png"
+    }
+}
 
     /// Return the bundled asset for `providerKey`, or `nil` if no artwork ships.
     /// The standard cache preserves brand colors; the template cache marks the
@@ -311,38 +322,41 @@ public enum PlatformLogoImage {
         NSLog("CodeCaps: provider mark unavailable — %@", reason)
     }
 
-    private static func bundledImage(providerKey: String, style: MarkStyle = .template, iconHint: String? = nil) -> NSImage? {
+    private static func bundledImage(providerKey: String, style: MarkStyle = .template, iconHint: String? = nil, isDark: Bool = false) -> NSImage? {
         let key = providerKey.trimmingCharacters(in: .whitespacesAndNewlines).lowercased() as NSString
         // Cache dimension: a manifest hint change must not keep serving the
-        // previously cached mark for the same provider key.
+        // previously cached mark for the same provider key, and appearance must
+        // never serve a Light silhouette onto a Dark surface (or the reverse).
         let hintName = iconHint?.trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
-        let cacheKey = ((hintName?.isEmpty == false) ? "\(key)|\(hintName!)" : (key as String)) as NSString
+        let stem = (hintName?.isEmpty == false) ? "\(key)|\(hintName!)" : (key as String)
+        let cacheKey = "\(stem)|v2|\(style.rawValue)|\(isDark ? "dark" : "light")" as NSString
         let cache = (style == .standard) ? standardCache : templateCache
         if let cached = cache.object(forKey: cacheKey) { return cached }
-        // Server-first: try the manifest-supplied hint name first; fall back
-        // to the built-in `resourceNames` map (pre-manifest behaviour) when
-        // the hint does not resolve to a file, so a bad hint can never blank
-        // a mark the bundled map would have found.
-        let hintResource: (name: String, ext: String)? = hintName.flatMap { name in
+        // Server-first: try the manifest-supplied hint name first; fall back to
+        // the built-in map when the hint does not resolve to a file, so a bad
+        // hint can never blank a mark the map would have found.
+        let hintResource: String? = hintName.flatMap { name in
             guard !name.isEmpty else { return nil }
-            if let existing = resourceNames[name] { return existing }
-            return (name, "svg")
-        }
-        let mapResource: (name: String, ext: String)?
-        if style == .template, let tmpl = templateResourceNames[key as String] ?? templateResourceNames[platformKey(of: key as String)] {
-            mapResource = tmpl
-        } else {
-            mapResource = resourceNames[key as String] ?? resourceNames[platformKey(of: key as String)]
-        }
-        for resource in [hintResource, mapResource].compactMap({ $0 }) {
-            if let image = imageFromBundle(resource: resource, key: key, cacheKey: cacheKey, cache: cache, style: style) {
+            // Known provider keys are base names ("claude"), not filenames.
+            // Route them through variantFile so we ask for claude-color.png
+            // (or -light/-dark) instead of looking up a file named "claude".
+            if let base = resourceNames[name] {
+                return variantFile(base: base, style: style, isDark: isDark)
+            }
+            return "\(name)-color.png"
+        }
+        let mapResource: String? = {
+            let base = resourceNames[key as String] ?? resourceNames[platformKey(of: key as String)]
+            return base.flatMap { variantFile(base: $0, style: style, isDark: isDark) }
+        }()
+        for filename in [hintResource, mapResource].compactMap({ $0 }) {
+            if let image = imageFromBundle(filename: filename, key: key, cacheKey: cacheKey, cache: cache, style: style) {
                 return image
             }
         }
         return nil
     }
-
-    private static func imageFromBundle(resource: (name: String, ext: String), key: NSString, cacheKey: NSString, cache: NSCache<NSString, NSImage>, style: MarkStyle) -> NSImage? {
+    private static func imageFromBundle(filename: String, key: NSString, cacheKey: NSString, cache: NSCache<NSString, NSImage>, style: MarkStyle) -> NSImage? {
         // Walk EVERY candidate, decoding as we go, and take the first that
         // yields pixels.
         //
@@ -352,7 +366,6 @@ public enum PlatformLogoImage {
         // down.  That is the shape of a bug that survives ten "cache" fixes: it
         // is not the cache at all, it is a resolution order that gives up early.
         // Existence and decodability are now checked together, per candidate.
-        let filename = "\(resource.name).\(resource.ext)"
         for candidate in candidateURLs(filename: filename) {
             guard FileManager.default.fileExists(atPath: candidate.path) else { continue }
             guard let image = NSImage(contentsOf: candidate) ?? NSImage(contentsOfFile: candidate.path) else {
@@ -485,15 +498,18 @@ public enum PlatformLogoImage {
         let key = providerKey.trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
         switch style {
         case .standard:
-            return bundledImage(providerKey: key, style: .standard, iconHint: iconHint)
+            return bundledImage(providerKey: key, style: .standard, iconHint: iconHint, isDark: isDarkMode)
         case .template:
-            return bundledImage(providerKey: key, style: .template, iconHint: iconHint)
+            return bundledImage(providerKey: key, style: .template, iconHint: iconHint, isDark: isDarkMode)
         case .custom:
             if let custom = loadCustom(providerKey: key, isDarkMode: isDarkMode)
                 ?? loadCustom(providerKey: platformKey(of: key), isDarkMode: isDarkMode) {
                 return custom
             }
-            return bundledImage(providerKey: key, style: .standard, iconHint: iconHint)
+            // No custom mark on disk for this provider: fall back to the
+            // bundled colour mark so the row still shows something real rather
+            // than the placeholder glyph.
+            return bundledImage(providerKey: key, style: .standard, iconHint: iconHint, isDark: isDarkMode)
         }
     }
 
diff --git a/Sources/CodeCaps/Resources/ProviderMarks/claude-color.png b/Sources/CodeCaps/Resources/ProviderMarks/claude-color.png
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diff --git a/Tests/CodeCapsTests/ProviderMarkTripletTests.swift b/Tests/CodeCapsTests/ProviderMarkTripletTests.swift
new file mode 100644
index 0000000..1932ce8
--- /dev/null
+++ b/Tests/CodeCapsTests/ProviderMarkTripletTests.swift
@@ -0,0 +1,92 @@
+import AppKit
+import XCTest
+@testable import CodeCaps
+
+/// Every provider mark must ship three explicit variants — colour, light ink and
+/// dark ink — and every one of them must resolve through the real loader.
+///
+/// The owner reported that no provider logo appeared at all except the one
+/// custom mark on disk.  Measurement ruled out the obvious causes: the assets
+/// were present, `Bundle.url(forResource:)` found every one, and
+/// `PlatformLogoImage.load` returned a valid image for all eighteen provider
+/// keys in a test process.  What was left was the delivery itself — the marks
+/// were SVGs, which come back as `_NSSVGImageRep`, a PRIVATE AppKit class, and
+/// the Muse rasters had an opaque white background baked in.
+///
+/// These assertions pin the delivered contract rather than a particular
+/// implementation: whatever draws a mark must be an `NSBitmapImageRep`, so a
+/// private rep cannot creep back in through any path.
+final class ProviderMarkTripletTests: XCTestCase {
+    private static let providerKeys = [
+        "anthropic", "claude", "openai", "codex",
+        "google-antigravity", "antigravity",
+        "google-antigravity:gemini", "google-antigravity:third-party", "gemini",
+        "xai", "grok", "grok-cli", "grok-bot",
+        "minimax", "muse", "muse-assist", "muse-code", "cursor",
+    ]
+
+    override func setUp() {
+        super.setUp()
+        PlatformLogoImage.invalidateCaches()
+    }
+
+    func testEveryProviderResolvesInEveryStyleAndAppearance() {
+        var unresolved: [String] = []
+        for key in Self.providerKeys {
+            for style in [MarkStyle.standard, .template] {
+                for isDark in [false, true] {
+                    if PlatformLogoImage.load(providerKey: key, style: style, isDarkMode: isDark) == nil {
+                        unresolved.append("\(key) \(style.rawValue) \(isDark ? "dark" : "light")")
+                    }
+                }
+            }
+        }
+        XCTAssertTrue(unresolved.isEmpty,
+                      "these marks drew the placeholder glyph: \(unresolved.joined(separator: ", "))")
+    }
+
+    /// The failure that started this was an SVG resolving to `_NSSVGImageRep`.
+    /// Whatever the artwork, a delivered mark must be a bitmap.
+    func testEveryDeliveredMarkIsABitmapNotAPrivateRepresentation() {
+        for key in Self.providerKeys {
+            for style in [MarkStyle.standard, .template] {
+                for isDark in [false, true] {
+                    guard let image = PlatformLogoImage.load(providerKey: key, style: style, isDarkMode: isDark) else { continue }
+                    XCTAssertTrue(image.representations.first is NSBitmapImageRep,
+                                  "\(key) \(style.rawValue) came back as "
+                                  + "\(image.representations.first.map { String(describing: type(of: $0)) } ?? "no representation")"
+                                  + ", which is the private-rep path the owner reported as invisible.")
+                }
+            }
+        }
+    }
+
+    /// A mark must not carry an opaque background, which is what made the Muse
+    /// PNGs read as a white box on any non-white surface.
+    func testNoDeliveredMarkHasAnOpaqueBackground() {
+        for key in Self.providerKeys {
+            for style in [MarkStyle.standard, .template] {
+                guard let image = PlatformLogoImage.load(providerKey: key, style: style),
+                      let rep = image.representations.first as? NSBitmapImageRep,
+                      rep.pixelsWide > 0, rep.pixelsHigh > 0 else { continue }
+                let corner = rep.colorAt(x: 0, y: 0)
+                XCTAssertNotEqual(corner?.alphaComponent ?? 0, 1.0,
+                                  "\(key) \(style.rawValue) has an opaque background; it would draw as a white box.")
+            }
+        }
+    }
+
+    /// Light and Dark are different ink, not the same file twice, so a Dark
+    /// surface never gets a black silhouette that vanishes into it.
+    func testLightAndDarkVariantsDiffer() {
+        for key in Self.providerKeys {
+            guard let light = PlatformLogoImage.load(providerKey: key, style: .template, isDarkMode: false),
+                  let dark = PlatformLogoImage.load(providerKey: key, style: .template, isDarkMode: true) else {
+                continue
+            }
+            XCTAssertNotEqual(light.representations.first as? NSBitmapImageRep,
+                              dark.representations.first as? NSBitmapImageRep,
+                              "\(key) served one identical silhouette for both appearances.")
+        }
+    }
+}
\ No newline at end of file