diff --git a/light9/web/light9-color-picker.html b/light9/web/light9-color-picker.html
--- a/light9/web/light9-color-picker.html
+++ b/light9/web/light9-color-picker.html
@@ -23,6 +23,7 @@
          background: url(/colorpick_rainbow_large.png);
          width: 400px; 
          height: 200px;
+         user-select: none;
      }
      #smallCrosshair, #largeCrosshair {
          position: absolute;