diff --git a/dither-image.js b/dither-image.js
index 8fd2179..2e6444e 100644
--- a/dither-image.js
+++ b/dither-image.js
@@ -79,8 +79,7 @@ class RGB {
         let lm = val & 15;
         let crlv = cr ? 50 : 0;
 
-        /*
-        let phase = ((cr - 1) * 25 - 58) * (2 * Math.PI / 360);
+        let phase = ((cr - 1) * 25 - 33) * (2 * Math.PI / 360);
 
         let y = 255 * (lm + 1) / 16;
         let i = crlv * Math.cos(phase);
@@ -89,8 +88,8 @@ class RGB {
         let r = y + 0.956 * i + 0.621 * q;
         let g = y - 0.272 * i - 0.647 * q;
         let b = y - 1.107 * i + 1.704 * q;
-        */
 
+        /*
         // PAL
         let phase = ((cr - 1) * 25.7 - 15) * (2 * Math.PI / 360);
 
@@ -101,6 +100,7 @@ class RGB {
         let r = y + 0.956 * i + 0.621 * q;
         let g = y - 0.272 * i - 0.647 * q;
         let b = y - 1.107 * i + 1.704 * q;
+        */
 
         return new RGB(r, g, b).clamp().fromSRGB();
     }