Is it generally good or bad to buy the same top in several different colors?

I am writing because I love my short sleeve button up cardigan (it seems to go with everything) and I want to buy it in several colors. I really like to layer a cardigan over most outfits, even in the summer (I get cold easily) and I haven't found a short sleeve cardi I like as well as this one before. I live in a warm climate, so a SS cardigan would last me into October. I have it in black, and I have white and the sapphire color on order. I'm tempted to buy it in either Bright Papaya, or the Light Citron color as well (or possibly both). What do you all think of that?

http://www.jcrew.com/catalog/p.....=cat302185

Thanks!