With white acrylic paint on the background. For what it's worth, I think this one looks a lot better if you click for the larger version.
And I can't resist showing y'all a recent picture of my toddlers. That's Nénu (the female) on the top, Oscar on the bottom. I like this photo because it shows the funny little spots in two rows on Oscar's belly. Bob and I get such a kick out of those spots! =smile= We call them toddlers because at seven and a half months of age, they're big enough to create a lot of havoc, but too young to have learned all the rules. And they're a lot of work to keep up with! =laugh=