Hello, I found how to fix "What's going on"-box :

Go to Admin Cp => Sytles => your style =>StyleVars => SecondaryContent =>
secondarycontent_background => change the color or the image path.
Choose: #25292c and url(images/gradients/grey-up.png)
To change the font-color :
Admin Cp => Sytles => your style =>StyleVars => SecondaryContent => secondarycontent_color
Choose : #c4c4c4 .
Border :
Same way, find "SecondaryContent => secondarycontent_border" and change the width from "1" to "0".