Some of my library lists were getting kinda long and I was getting tired of scrolling so much. So I went into the 'iu' folder in the 'Runtime' folder and edited the '27100_library1.psd' file so that I didn't have to use up space looking at all those folders. If anyone's intersted, I'll post a little tutorial on how I did it. I'm not sure about those dark patches in the second image, but I do know they don't affect how the buttons work.