You can use color hexes ( such as #000000 , etc. ) to change colors of any section !

Images also work for some of these , like the background & raised + other basic stuff . To do this , put url(putimagelinkhere) into the section you want it to be shown

You can also create gradients by typing linear-gradient(#hex, #hex) & you can do more than two colors if you wish to , other types of gradients work as well by replacing the "linear" with radial & conic , maybe a few others but those are the only ones I can remember off the top of my head !

I'm just listing some really basic stuff , if you need to know specific things let me know and I should be able to help ! Except for when it comes to CSS stuff ( which is the advanced thing at the bottom of the profile editing page ) , I'm not skilled in that at all

If you have a question for what section changes what part of your profile I can help out with that as well ^^