When I use Patch/Attributes/Color Wheels I get the expected display of available color schemes. I also have a lot of tabs marked "Custom Color Wheel 1, 2 and so on. I would like to clean up a bit and the manual tells me there is a {Delete} function. At the bottom of my screen my {Delete} and {Edit} are grayed out so I can't use them. Same for Gobo, Scrollers and Effects.