Bug. Clear or semiopaque colors in user-defined color schemes in Prism 7 Mac

Bug 1.  If you try to specify "Clear" as the Bar fill pattern color in a custom color scheme, the color scheme won't work properly. Colors in the graph won't stick when you save and then reopen the Prism file. 

Bug 2. Semitransparent colors in custom color schemes doesn't stick. The color scheme will actually save the fully opaque color even if you choose semitransparent. 

These bugs are in Prism mac only, up to 7.0b. We'll fix this bug in  a future release. For now, don't don't set bar patterns to clear when defining color schemes.