diff --git a/src/psychadelic-graphics/psychadelicColors.frag.glsl b/src/psychadelic-graphics/psychadelicColors.frag.glsl
index 5c15c0e..fa555eb 100644
--- a/src/psychadelic-graphics/psychadelicColors.frag.glsl
+++ b/src/psychadelic-graphics/psychadelicColors.frag.glsl
@@ -15,13 +15,15 @@ float random (vec2 st) {
 }
 
 void main() {
-    vec2 uv = gl_FragCoord.xy/vec2(u_canvasWidth, u_canvasHeight);
+    float canvasSize = max(u_canvasWidth, u_canvasHeight);
+    vec2 uv = gl_FragCoord.xy/vec2(canvasSize, canvasSize);
 
     vec3 red = vec3(1.0, 0.0, 0.0);
     vec3 green = vec3(0.0, 1.0, 0.0);
     vec3 blue = vec3(0.0, 0.0, 1.0);
 
-    float size = 0.05;
+    float size = 0.01;
+
 
     uv.x = floor(uv.x / size) * size;
     uv.y = floor(uv.y / size) * size;