Paint codes and type

I am going to paint my duster this saturday. I am looking for the difference between sassy grass green and sublime green. I'm not sure which one it is I really like because I cant find a solid definition of it.
I also Haven't quite decided on single stage or base/clear. I like the idea of a single stage since its my daily driver that I take to school I am not looking for a show car but I also would like it to look nice. opinions pros and cons please?