Here is the before and after:
I spray painted it with flat black spray paint first:
Next, I sprayed some Krylon Looking Glass spray paint onto a Tupperware lid (fancy, right?) and mixed in a little metallic silver spray paint with it.
I used a q-tip to paint each diamond with the silver mixture.
Then I let it dry! That was all- quick and easy. And now I love this piece much much more! It has currently found a home on our bathroom shelves: