It looks a bit bland at the moment, could we add some shade behind it and some nice divider lines between the selections?

Although I currently have no idea on how to do this,
My guess would be to fake it using a png file in the background the difficult one would be to add divider lines between the icons.
It looks a bit bland at the moment, could we add some shade behind it and some nice divider lines between the selections?

Although I currently have no idea on how to do this,
My guess would be to fake it using a png file in the background the difficult one would be to add divider lines between the icons.