I own pacific but haven't tried on the Colorado. I'd like to own a pair in the colorado wash, but since I don't I'd have to go with Pacific since I'm not sure how the colorado would look on me.
honestly i'm not a big fan of the colorado wash. to me it looks fake, like cheap forever 21 jeans or something, i dunno why. on the other hand tho, i agree w/ rocky about the pacific wash being rivaled by a lot of other brands dark washes. i have the pacific wash & find that it almost matches all my other jeans so if i were u i would go w/ something extra dark or maybe even black (i know there's been debate about this). good luck!