diff --git a/flamechart-color-pass-renderer.ts b/flamechart-color-pass-renderer.ts
index ac943b7..4033228 100644
--- a/flamechart-color-pass-renderer.ts
+++ b/flamechart-color-pass-renderer.ts
@@ -54,11 +54,11 @@ export class FlamechartColorPassRenderer {
           return 2.0 * abs(fract(x) - 0.5) - 1.0;
         }
 
-        vec3 colorForBucket(float bucket) {
-          float x = triangle(50.0 * bucket);
-          float H = 360.0 * bucket;
-          float C = 0.25 + 0.1 * x;
-          float L = 0.80 - 0.1 * x;
+        vec3 colorForBucket(float t) {
+          float x = triangle(100.0 * t);
+          float H = 360.0 * (0.9 * t);
+          float C = 0.25 + 0.2 * x;
+          float L = 0.80 - 0.15 * x;
           return hcl2rgb(H, C, L);
         }
 
@@ -92,8 +92,8 @@ export class FlamechartColorPassRenderer {
               here.x == W.x && here.x != E.x
             )
           ) {
-            // We're on an edge! Draw white.
-            gl_FragColor = vec4(1, 1, 1, 1);
+            // We're on an edge! Draw transparent.
+            gl_FragColor = vec4(0, 0, 0, 0);
           } else {
             // Not on an edge. Draw the appropriate color;
             gl_FragColor = vec4(colorForBucket(here.z), here.a);
diff --git a/flamechart-view.tsx b/flamechart-view.tsx
index e8b823a..d0b45ac 100644
--- a/flamechart-view.tsx
+++ b/flamechart-view.tsx
@@ -183,7 +183,7 @@ export class FlamechartPanZoomView extends ReloadableComponent<FlamechartPanZoom
     }
 
     ctx.font = `${physicalViewSpaceFontSize}px/${physicalViewSpaceFrameHeight}px ${FontFamily.MONOSPACE}`
-    ctx.fillStyle = Colors.GRAY
+    ctx.fillStyle = Colors.DARK_GRAY
     ctx.textBaseline = 'top'
 
     const minWidthToRender = cachedMeasureTextWidth(ctx, 'M' + ELLIPSIS + 'M')
diff --git a/style.ts b/style.ts
index 67cde9d..490efdd 100644
--- a/style.ts
+++ b/style.ts
@@ -12,7 +12,7 @@ export enum Colors {
   LIGHT_GRAY = "#C4C4C4",
   MEDIUM_GRAY = "#BDBDBD",
   GRAY = '#666666',
-  DARK_GRAY = '#333333',
+  DARK_GRAY = '#222222',
   LIGHT_BLUE = '#56CCF2',
   DARK_BLUE = '#2F80ED'
 }