diff --git a/mac/Sources/Byre/Dialogs.swift b/mac/Sources/Byre/Dialogs.swift
index 376550c..b3b5a44 100644
--- a/mac/Sources/Byre/Dialogs.swift
+++ b/mac/Sources/Byre/Dialogs.swift
@@ -249,7 +249,7 @@ struct OverlayHost: View {
     var body: some View {
         ZStack(alignment: .topLeading) {
             if let switcher = overlays.switcher {
-                Color.black.opacity(0.35)
+                Palette.overlayBackdrop
                     .contentShape(Rectangle())
                     .onTapGesture {
                         switcher.close()
@@ -257,7 +257,7 @@ struct OverlayHost: View {
                 SwitcherPlacement(model: switcher)
             }
             if let image = overlays.image {
-                Color.black.opacity(0.6)
+                Palette.imageBackdrop
                     .onTapGesture {
                         overlays.image = nil
                     }
@@ -283,7 +283,7 @@ struct OverlayHost: View {
                 .padding(4)
                 .background(Palette.raised, in: RoundedRectangle(cornerRadius: 6))
                 .overlay(RoundedRectangle(cornerRadius: 6).stroke(Palette.border))
-                .shadow(color: overlayShadow, radius: 14, y: 8)
+                .shadow(color: Palette.overlayShadow, radius: 14, y: 8)
                 .environment(\.paneAccent, menu.accent)
                 .onHover { inside in
                     overlays.menuHover = inside
@@ -292,14 +292,14 @@ struct OverlayHost: View {
                 .offset(x: menu.anchor.minX, y: menu.anchor.maxY + 4)
             }
             if let m = overlays.modal {
-                Color.black.opacity(0.35)
+                Palette.overlayBackdrop
                     .contentShape(Rectangle())
                 ModalPlacement(modal: m, pane: overlays.paneFrame) { value in
                     overlays.answerModal(value)
                 }
             }
             if let alert = overlays.alerts.last {
-                Color.black.opacity(0.35)
+                Palette.overlayBackdrop
                     .contentShape(Rectangle())
                 GeometryReader { g in
                     AlertBox(alert: alert, maxText: max(60, g.size.height - 48 - 90)) {
@@ -432,7 +432,7 @@ private struct ModalBox: View {
         .frame(maxWidth: 520)
         .background(Palette.raised, in: RoundedRectangle(cornerRadius: 10))
         .overlay(RoundedRectangle(cornerRadius: 10).stroke(Palette.border))
-        .shadow(color: overlayShadow, radius: 14, y: 8)
+        .shadow(color: Palette.overlayShadow, radius: 14, y: 8)
     }
 }
 
@@ -460,7 +460,7 @@ private struct AlertBox: View {
         .frame(maxWidth: 520)
         .background(Palette.raised, in: RoundedRectangle(cornerRadius: 10))
         .overlay(RoundedRectangle(cornerRadius: 10).stroke(Palette.border))
-        .shadow(color: overlayShadow, radius: 14, y: 8)
+        .shadow(color: Palette.overlayShadow, radius: 14, y: 8)
         .padding(24)
     }
 }
diff --git a/mac/Sources/Byre/Format.swift b/mac/Sources/Byre/Format.swift
index 3dbaef5..9fea5ea 100644
--- a/mac/Sources/Byre/Format.swift
+++ b/mac/Sources/Byre/Format.swift
@@ -654,7 +654,3 @@ struct FlowLayout: Layout {
         return rows
     }
 }
-
-let overlayShadow = Color(nsColor: NSColor(name: nil) { appearance in
-    appearance.bestMatch(from: [.aqua, .darkAqua]) == .darkAqua ? NSColor(srgbRed: 0, green: 0, blue: 0, alpha: 0.5) : NSColor(srgbRed: 16 / 255, green: 24 / 255, blue: 40 / 255, alpha: 0.18)
-})
diff --git a/mac/Sources/Byre/Palette.swift b/mac/Sources/Byre/Palette.swift
index 0237d7c..14bbcb0 100644
--- a/mac/Sources/Byre/Palette.swift
+++ b/mac/Sources/Byre/Palette.swift
@@ -29,6 +29,12 @@ enum Palette {
     static let task9 = dynamic(0x793c9f, 0xd7a6fc)
     static let task10 = dynamic(0x942e79, 0xf59cd8)
 
+    static let overlayBackdrop = Color.black.opacity(0.35)
+    static let imageBackdrop = Color.black.opacity(0.6)
+    static let overlayShadow = Color(nsColor: NSColor(name: nil) { appearance in
+        appearance.bestMatch(from: [.aqua, .darkAqua]) == .darkAqua ? NSColor(srgbRed: 0, green: 0, blue: 0, alpha: 0.5) : NSColor(srgbRed: 16 / 255, green: 24 / 255, blue: 40 / 255, alpha: 0.18)
+    })
+
     private static func rgb(_ hex: UInt32) -> NSColor {
         NSColor(srgbRed: CGFloat(hex >> 16 & 0xff) / 255, green: CGFloat(hex >> 8 & 0xff) / 255, blue: CGFloat(hex & 0xff) / 255, alpha: 1)
     }
diff --git a/mac/Sources/Byre/Switcher.swift b/mac/Sources/Byre/Switcher.swift
index 24dcb23..26b2e7b 100644
--- a/mac/Sources/Byre/Switcher.swift
+++ b/mac/Sources/Byre/Switcher.swift
@@ -417,7 +417,7 @@ private struct SwitcherBox: View {
         .padding(10)
         .background(Palette.raised, in: RoundedRectangle(cornerRadius: 10))
         .overlay(RoundedRectangle(cornerRadius: 10).stroke(Palette.border))
-        .shadow(color: overlayShadow, radius: 14, y: 8)
+        .shadow(color: Palette.overlayShadow, radius: 14, y: 8)
         .onAppear {
             DispatchQueue.main.async {
                 logFocus("switcher before focus")