Quick Comparison: Sinful Colors Pistache vs. Sinful Colors Exotic Green

Purchased by Me 
Sometimes I get my mental inventory of the Sinful Colors polishes I own all jumbled in my head. I'll see a new color and think:

"Oooh, I think that looks too much like the shade XXX, which I already have, so I think I'll pass."

And sometimes I'll think:

"Oh, that new shade looks nothing like the shade XXX, so I better buy it!"

And of course, I'll get the new shade home and