Window Latch Cover

I made this model to cover the silver window locks / latches in my window frames, resulting in an all black window. Apparently the manufacturer doesn't make black latches so this was my only option. 

The silver cover I have is 23mm x 60mm and there is a little wiggle room to make small adjustments. 

The cover attaches with a magnet 10mm x 2mm round magnet. The magnet attaches with double sided tape.