diff --git a/THEMES.md b/THEMES.md
index 970bd47cb..311b6de0e 100644
--- a/THEMES.md
+++ b/THEMES.md
@@ -719,6 +719,8 @@ EmulationStation borrows the concept of "nine patches" from Android (or "9-Slice
 	- Path to the "filled star" image.  Image must be square (width equals height).
 * `unfilledPath` - type: PATH.
 	- Path to the "unfilled star" image.  Image must be square (width equals height).
+* `color` - type: COLOR.
+	- Multiply each pixel's color by this color. For example, an all-white image with `<color>FF0000</color>` would become completely red.  You can also control the transparency of an image with `<color>FFFFFFAA</color>` - keeping all the pixels their normal color and only affecting the alpha channel.
 * `zIndex` - type: FLOAT.
 	- z-index value for component.  Components will be rendered in order of z-index value from low to high.