Hi there xxinightxx,
Right now it's not possible to change the ribbon top bar and the explorer statusbar from Windows 8,
but I believe we'll be able to on the future, some bits are just harder to get into skinning, mostly
because they are totally new, but like in previous versions of WB against new OSs, more goodies
always come with time.
About the Explorer sidebar (left) you can change it just like you did in Windows 7,
Edit Explorer Parts > Folders bar > Extra settings tab
• Here is a screenshot: