So I figured out what's up w/ the new colors.. they're from the current "Modern" color scheme, which has been around forever. For WP 7.0 they are swapping the "Default" fresh blue palette w/ the harsher "Modern" palette. Good news is you can change it back via your user profile.

@perishable That... may bring back people making custom profile collars.

@perishable Oh no! Not hipster blue :( plz!