Ok here we go, first I would like to change these borders as well as the grey background color. (If I change them in the color palette a lot of other colors disappears too).
I would also like to change the color of these borders on the sidebar at the forum hompage. (if I change that color on the color palette I talked about to white, they disappear, but a lot of other stuff I want to be visible too..)
At last I would like to change these colors of the following box on members profiles. The blue around the follower count and those two grey right and left borders coming down from the black top border.
I appreciate all the help, thank you!