Those pop-up 'OMG PLEZ LET US EMAIL U COOL TIPZ' interstitials always let me know how much the site owner knows about marketing and branding.
This article pointed out that a red button amidst a green palette converted better in one instance, because the red button contrasted starkly. That's also my current theory on how to make an app icon.<p>For my App Store apps, I choose loud colors that contrast well with other apps in the category. I look at how the icon stands out in searches on iPhone, iPad, and iTunes. I still want a beautiful icon, but my primary concern is whether it pops.<p>Unfortunately, it's hard to test the theory.
Test after test proves there is consistency to how people respond to color in advertising. As a professional marketer, every time I stray I'm often corrected by later optimization efforts.
Optimism, sincerity, creativity, etc are great.<p>But what about my organization? The colors should inspire or remind the customer of fear, secrecy and power (not their power, our power).
Great primer, if this stuff interests you - particularly with regard to utilizing colors to drive CRO etc please go check out <a href="http://www.colorvoodoo.com/" rel="nofollow">http://www.colorvoodoo.com/</a> which is the original book that got me A/B testing >10 years back - great content -