Cannot seem to change colors on this phpbb theme

I am trying to change all the "greens" to different colors back I cannot seem to get it to work. We also changed the colors of the images but they change either. could someone point me in the right direction? Thanks.

theme:https://www.dropbox.com/sh/owd0nmqw7oj9gbv/AACIUgRNFy7YPBCpp6roGxmDa
website: http://clantest.dylanmetz.com/phpbb/

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