How do I blend breastforms with my skin?

I just got my first set of (silicone) breast forms today. They feel nice and I love the way they look under a shirt, but when I take my shirt off, they don't exactly blend in with my skin.

The color is only off by a little, but I'd like to find some way to blend the color in with my skin so that it looks seamless if I'm showing cleavage or not wearing a shirt.

What products would be good for this?