I discovered this block last year when I was looking for something to make for a very special SIL, I bought 4 colors but decided it looked better with just two. I gave my mom the other two and she made one for her sister. I think it was more the colors I chose because I really like these with 3 and 4 colors just as much as the ones with 2. I haven't seen an ugly yet!
Also I haven't seen a PINK one or a RED and GREEN one either!LOL