I have gotten such a great response to my bird bath leaves. I thought I'd go ahead and paint one. This is an optional step, but painting your leaf can make it look more realistic, and it will more readily match your garden decor.
Start with some acrylic paint. You'll just need a dab (about half of the amount of toothpaste that you'd use). Then add about 1/4 cup of water to the paint and stir. If the wash is too dark, just add more water, too light, add more paint. You get the idea.