This may be more of a mac problem, but I want to change the krita icon, and when I change it through the get info window, It just changes back to the old icon when I open it on the dock. I'm running the latest OS. this is what is looks like... https://drive.google.com/open?id=0B_TML-q069_jd0tjel9MSWdhR1E

Someone told me to "replace the icons in the source tree and rebuild Krita" but I would have no idea how to do that on a mac, can someone help?