diff --git a/src/game-loop/game-loop.ts b/src/game-loop/game-loop.ts
index 91aadb8..d951e71 100644
--- a/src/game-loop/game-loop.ts
+++ b/src/game-loop/game-loop.ts
@@ -1,6 +1,5 @@
 import { AgentGenerationPipeline } from '../pipelines/agents/agent-generation/agent-generation-pipeline';
 import { AgentPipeline } from '../pipelines/agents/agent-pipeline';
-import { spawnAgents } from '../pipelines/agents/spawn-agents';
 import { BrushPipeline } from '../pipelines/brush/brush-pipeline';
 import { CommonState } from '../pipelines/common-state/common-state';
 import { CopyPipeline } from '../pipelines/copy/copy-pipeline';
diff --git a/src/pipelines/agents/agent-generation/agent-generation.wgsl b/src/pipelines/agents/agent-generation/agent-generation.wgsl
index 69ceac9..8c28fc6 100644
--- a/src/pipelines/agents/agent-generation/agent-generation.wgsl
+++ b/src/pipelines/agents/agent-generation/agent-generation.wgsl
@@ -21,6 +21,5 @@ fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
     angle,
     0,
     1000000,
-    0
   );
 }
diff --git a/src/pipelines/agents/agent-generation/agent-schema.wgsl b/src/pipelines/agents/agent-generation/agent-schema.wgsl
index 2663ea6..44c0843 100644
--- a/src/pipelines/agents/agent-generation/agent-schema.wgsl
+++ b/src/pipelines/agents/agent-generation/agent-schema.wgsl
@@ -3,7 +3,6 @@ struct Agent {
   angle: f32,
   species: f32,
   timeToLive: f32,
-  timeToLive2: f32,
 }
 
 @group(1) @binding(1) var<storage, read_write> agents: array<Agent>;
diff --git a/src/pipelines/agents/agent.wgsl b/src/pipelines/agents/agent.wgsl
index eaab47e..3b568fb 100644
--- a/src/pipelines/agents/agent.wgsl
+++ b/src/pipelines/agents/agent.wgsl
@@ -83,13 +83,13 @@ fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
     nextAngle = agent.angle + rotation;
   }
 
-  var trail = vec4<f32>(0, 1, 0, 0);
+  var trail = vec4<f32>(0, 0.1, 0, 0);
   if (agent.species == 0) {
     trail = vec4(0.1, 0, 0, 0);
   }
 
   let current = textureLoad(trailMapIn, vec2<i32>(nextPosition), 0); 
-  textureStore(trailMapOut, vec2<i32>(nextPosition), vec4(trail.rgb + current.rgb, 0));
+  textureStore(trailMapOut, vec2<i32>(nextPosition), vec4(trail.rgb + current.rgb, current.a));
 
   agent.position = nextPosition;
   agent.angle = nextAngle;
diff --git a/src/pipelines/render/render.wgsl b/src/pipelines/render/render.wgsl
index 1506fdc..8cde5bf 100644
--- a/src/pipelines/render/render.wgsl
+++ b/src/pipelines/render/render.wgsl
@@ -16,15 +16,15 @@ fn fragment(@location(0) uv: vec2<f32>) -> @location(0) vec4<f32> {
 
   let backgroundColor = vec3(0.9) + 0.075 * random.r;
 
-  let speciesAStrength = traces.r;
-  let speciesBStrength = traces.g;
+  let speciesAStrength = clamp(pow(traces.r, settings.clarity), 0, 1);
+  let speciesBStrength = clamp(pow(traces.g, settings.clarity), 0, 1);
   let brushStrength = traces.a;
 
-  let rgbColor = sqrt(vec3(
-    settings.speciesColorA * clamp(pow(speciesAStrength, settings.clarity), 0, 1) +
-    settings.speciesColorB * clamp(pow(speciesBStrength, settings.clarity), 0, 1) +
-    settings.brushColor * brushStrength
-  ));
 
+  let rgbColor = sqrt(
+    settings.speciesColorA * speciesAStrength + 
+    settings.speciesColorB * speciesBStrength +
+    settings.brushColor * brushStrength
+  );
   return vec4(backgroundColor - rgbColor, 1);
 }
diff --git a/src/settings.ts b/src/settings.ts
index 761575c..c14b5ba 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -34,9 +34,9 @@ export const settings: GameLoopSettings &
   sensorOffsetDistance: 60,
 
   diffusionRateTrails: 0.4, // inverse
-  decayRateTrails: 0.9,
+  decayRateTrails: 0.9, // inverse
   diffusionRateBrush: 4, // inverse
-  decayRateBrush: 0.98,
+  decayRateBrush: 0.99, // inverse
 
   brushColor: palette.blue,
   speciesColorA: palette.yellow,