I did this in flash class, basically you drag and drop the mane/tail and markings on the horse coat color you want... its actually fun to do, however **** to reset and make a new combination, hit the reset button when you get to the "tail" section****
Any who, I like to play with it, so maybe you would too... again its not perfact, or polished, just somthing that I thought some horsey person would like to play with
Oh yeah... you have to go in order, cause I am to lazy to figure out the scripting to make the images stay if you go out of order... yay for lazyness!!! *rolls around on the floor*
btw i make my horse Zagi