diff --git a/ReactionRecorder.cs b/ReactionRecorder.cs
--- a/ReactionRecorder.cs
+++ b/ReactionRecorder.cs
@@ -31,8 +31,8 @@ namespace DesertPaintLab
         const int COLOR_TOLERANCE = 3;
 
         const int DEFAULT_SWATCH_HEIGHT = 24; // including top and bottom borders
-        const int DEFAULT_SWATCH_WIDTH = 274;
-        const int DEFAULT_COLOR_BAR_WIDTH = 320;
+        const int DEFAULT_SWATCH_WIDTH = 260;
+        const int DEFAULT_COLOR_BAR_WIDTH = 306;
         const int DEFAULT_RED_BAR_SPACING = 32;
         const int DEFAULT_GREEN_BAR_SPACING = 42;
         const int DEFAULT_BLUE_BAR_SPACING = 52;