Didn’t you get the memo about not being allowed to express personal opinions on here? 
There was a dark gradient there before (black at the top to navy blue below), so this one’s actually a bit lighter. TBH, I’m not really that keen on the look and feel of any of the site, but I don’t have the mad design skillz to improve it that much.
If you fancy re-doing the banner yourself to something you would like to see, then it needs to be 1250×125 pixels in size and the font is “London Between” which you can get from dafont.com. 