diff --git a/utils/contrast_color.ts b/utils/contrast_color.ts
index 2f3e908..7093e14 100644
--- a/utils/contrast_color.ts
+++ b/utils/contrast_color.ts
@@ -7,7 +7,7 @@ export const contrastColor = (color: ralTypes) => {
     if (hex) {
         const hsl = { h: 0, s: 0, l: 0 }
         new Color(hex).getHSL(hsl)
-        if (hsl.l < 0.5) {
+        if (hsl.l < 0.45) {
             return '#fff'
         } else {
             return '#000'
diff --git a/utils/material.ts b/utils/material.ts
index 12d7b49..94fa2ee 100644
--- a/utils/material.ts
+++ b/utils/material.ts
@@ -82,22 +82,13 @@ const m_onBeforeCompile = (shader) => {
         }
         ${shader.fragmentShader}
     `
-        // .replace(
-        //     `#include <map_fragment>`,
-        //     `
-        //     float noise_v = noise(diffuseColor.rg);
-        //     float clamped_noise = clamp(noise_v, -0.15, 0.15);
-        //     diffuseColor.rgb *= clamped_noise;
-        //     #include <map_fragment>
-        //     `
-        // )
         .replace(
             `#include <dithering_fragment>`,
             `#include <dithering_fragment>
 
             float noise_v = noise(gl_FragColor.rg);
-            float clamped_noise = clamp(noise_v, -0.05, 0.05);
-            gl_FragColor.rgb -= clamp(vec3(clamped_noise), 0.0, 1.0);
+            float clamped_noise = clamp(noise_v, 0.85, 1.0);
+            gl_FragColor.rgb *= vec3(clamped_noise);
         `
         );
 };