This is SO EASY it hardly needs explaining!
While at a Church rummage sale last week I found these...
...sitting right next to these! And bought it all for a dollar.
I did this...
...with this.
And painted a few white spots on the bowls with plain old craft paint. We had a storm the other night and it rained all day the following day. The paint is still holding fast, not a smear in sight!