App skinning, system colours and icons

Hello, I am new to this, and I chose windowblinds because I have bad eyesight (partially sighted) and I use magnifying software on my PC.

I find that when using ordinary windows colours things are too bright and I can only use it for half an hour or so until I have to turn my pc off, so I chose windowblinds especially for the dark skinning.

 My first question is, is it possible to skin Itunes?  The colours are terribole, it is bright grey surround and  brilliant white on the songs/tracks lists.  Is it possible to change these colours?  I have read in many forums that Itunes used to have colour choices for all arreas, but Apple decided to go with the white grey option and makeit unalterable.  If it is possible could somebody tell me how to do it?

I really do not understandf the system colours settings. There are many options and I do not know what they are for/how they make the system look? Could somebody please briefly describe what each setting/colour alters?

My 3rd question is about missing explorer icons.  I used a friends version of windowblinds 6 and you coul select which explorer icons you wanted, you could stick with the Microsoft standard or choose from icons sets from those available from all of your skins, and they were displayed graphically to let you see the icons which were picked before they were applied.  My version is windowblinds 7 and I cannot find the option to pick/change any icons within the program.

Any help would be greatly appreciated, and  I don't mind if you post here or send me a private message....

Thanks