Color choices for Split/Rainbow cakes?

How do you guys come up with your color combos for your rainbow/split/whatever cakes? I've tried consulting my color wheels for color combinations and I've tried to utilize my scrapbooking books that address color combinations but I feel as if I'm flying blind. Is there a secret to the order of the colors in the cake? Are there colors that should be forever quarantied from each other? I'd like to do more that duplicate the cakes I've seen elsewhere but I'm not "there" yet.

When I decide to make a split I try to use similar colors...such as red/pink or red/orange...blue/purple...green/blue ..colors that wont be gross if the start to blend a little. For rainbows one thing i have notices is that yellow and blue or blue and orange next to each other make nasty colors in the middle when they blend. Of coarse I use snaz and it blends more than some other brands.

I sometimes have specific things in mind - green/uv green/yellow/gold for leaves, red/pink/white for roses, pink/interferenze pink/gold/yellow for crowns, various blues/white for dolphins etc. I also admit to sneaking peeks at other split cakes for ideas on colour combos

I just stick colours together that I would use for common designs... like white, pink, purple for butterflies. Or burgundy, red, orange and yellow for fire/dragons, etc.

Just put together what you think you will use.

The only thing I've noticed is that red and white beside each other tends to make the white a bit too pink... but then again, isn't that the idea of a split cake?

I've got a blog post about it with photos of the trays of split cakes I made myself.

Thanks for the advice ladies! I think I'm going to follow suit and just put together combos that I like in my world outside of FP...that's the way I get dressed for work and I haven't made anyone sick yet...can't be all bad right?

It's going to take a while to get all of the colors I'd like...and it doesn't help that there are tons of posts that mention other fab colors I didn't know I wanted....oh well...a girls gotta have goals...