Thanks for the reply. Yes, I know that's Gnome panel and I'm using your panel background and wall right now, here's the preview [link]
but I can't figure out how did you make window tabs like that if you're not using window list. When I first saw it that was long time ago, I really thought you're using KDE
I want to remove the brackets on text on windows list, ex. [Pictures], Cause it's kinda dirty for me.