I'm not a designer, and especially not one with skills in color taste...but what would be the point of this? I mean, this splash of color is helpful for the Facebook and Twitter apps, which feature streams that can be mistaken for each other and also for the times in which I've opened an in-app browser window.<p>But for Apple's core apps, such as the Map app, it's pretty clear that I'm in the Map app and not in Messages. Furthermore, Facebook and Twitter have about 3-4 years of color-branding experience on their side...in that, I automatically recognize their respective shades of blue as belonging to them.<p>In addition, this color-splash for core apps seem to add a few negative consequences:<p>1. It couples colors to apps in a way that may be detrimental for the operating experience in general...for example, if I've been "trained" to think that "green" means "Message" app...that causes a bit of a disjoint for third-party messaging apps that do not use green.<p>2. Will "danger" buttons (such as "Delete") no longer be red, in the case that one of the core apps has red as its splash color?<p>3. Will the use of color be so critical in distinguishing the core apps that color blind users will operate at a disadvantage?