for example:
I change the gobos from a movinghead. Than I change the color of a Led Spot.
If I click Clear with the mouse once, it clears only the color from the LED Spot. (only the fixtures which are assigned(blue))
If I click Clear again, also the gobo is cleared.
There was one of your files which works so.
In your our last file, the button does nothing.
By the way, thanks for your patience