Studio Time: Color Issues

I'm having issues with color. I've been combining the transparent colors and they're pretty, but they're too dark. You really lose the detail. It's so annoying. I want to add detail. I have twisties and my own stringers (thinner and easier to control) and think I'm adding detail but it's getting lost in the dark transparent colors. I think I don't like those colors unless Iearn to combine with lighter transparent colors.