My old apartment was replacing the windows, so I found one of the old ones out back, on another occasion I found the following picture frame. I decided to paint the glass. I used basic Acrylic paints and dobbed it on the back side of the window glass.
Then you just flip it around. it gives you a great finished look since you get the shine of the glass panes.
A few years later I dug out the same paints to paint the back of the glass on this frame. I also painted the frame white and distressed it. You just need to glue the glass into the frame by piping hot glue around all the edges. Both now live happily in my kitchen.
Oh and in case you are wondering....yes that is a woven blind attached to a bookcase. It is serving us well as a makeshift pantry.