Dont quite understand what your asking here, is the colours used the actual design? or is this where the gromits are going to be glued on so that actual rhinestones can be placed in the gromits.

If its the actual design that you are going to use with screen or transfer there are many PS tuts that you can convert to illustrator. Just to a search on any of the large PS site like PhotoShop cafe or the like and start from there, I have seen at least 3. Also do a search on this site and see what happens.