Different color morphs of the same species are the same to care for, it's just a matter of cost and personal preference.
If you are asking about different species then it gets a little more complex. Maroons are very much more aggressive than most others for example. Ocellaris tend to be slightly more hardy than true percs, but overall true percs and ocellaris are very similar to deal with. As for the many other sp of clowns I can't really say off the top of my head but I know that there are plenty of variables in terms of care and behavior.