I think it's okay, but I agree that the gray would be a bit better if it were blue. Also, all of text on the left side of the screen (post count, join date, and posting title) is now too small to match the rest of the text. It's completely dwarfed by the user name, and also significantly smaller than the rest of the text. Make it the size of the text for the date posted, or even the default size of the regular text, and it will look better.
Now, so far it's been personal preference, but this last bit is a serious case of "the current design is going to have unintended consequences, please fix it": the report button. It's right next to the post and quote buttons. That's going to lead to a lot of accidental clicks in the long run. Personally, I think it should either be swapped with the current position of the PM button, or put down on the lower right corner, but really any of the other corners will be better than where it is now.
Other than that, the current design is fine in my book. For once, this is an alright change. It's a change to something that didn't really /need/ to be changed, but it's essentially a neutral change, especially since the report button was easy to accidentally click on the old design too (though not /as/ easy.)