Sorry, I didnt see your post nor anyone else's until significantly later; which might have appeared I ignored your post and kept looking for answers. It appears the forum has had some problems lately with updating thread posts timely and appears to post them in "spurts".
So far, 1 and 3 have been confirmed as they can't be changed. I'm not sure which specific section in SKS to change #6 (button face color); nor, the pink color... hence, why I started this thread.
Hopefully, there's a definitive answer to which sections in SKS the other components can be changed.
Lastly, it seems like the only person bothered by my posts might be you. Sorry, you feel that way; it seems your perception might not be shared by others trying to help.
6 is the buttonface color.1 and 3 cannot be changed.4 is more than likely ScrollbarArrows.bmp IF the grippers have been skinned that particular way..The pink in whatever application you have going on there and in some areas of the skin, just colorpick the exact color and search the code for it.Lastly, if you want help in these forums, please excercise some patience and manners.