c'mon why so serious, it's so easy to ask to fire someone. Do you really think the style engineer just pushed the update all by himself without anyone taking a look at it?
Yes, looks like they made colors throughout the site more vibrant. The new colors are slightly straining to look at, especially with brightness at 100%. Maybe I'm crazy?
You're not crazy. I think the people who want such colors (which I'm guessing is a very small minority) should use a custom css, instead of straining the eyes of the majority of users.
Lots of small incremental changes; buttons, inputs and textareas (different hover/focus styles), ... Not surprising considering they rolled out the new header not too long ago.