diff --git a/app/assets/stylesheets/application/colorpicker.css.scss b/app/assets/stylesheets/application/colorpicker.css.scss
index b21c443f8..fd02861fa 100644
--- a/app/assets/stylesheets/application/colorpicker.css.scss
+++ b/app/assets/stylesheets/application/colorpicker.css.scss
@@ -25,6 +25,7 @@
       margin-right: 2px;
       width: 16px;
       height: 16px;
+      font-size: 4px;
       &.used-color {
         background: image-url("chosen-sprite.png") -19px 13px;
       }