Brought it home, lightly sanded it, cleaned it, let it dry, then spray painted it with heirloom white, two coats.
Let that dry, brought it in and used my husband's blue acrylic paint to paint on blue swirls. I added some black spots to it, then took a dampened paper towel and began wiping it all off for two reasons:
a) I knew the blue swirls would leave a faded blue mark, and
b) I wanted the black to make it look slightly antiqued.
Finally, I used black acrylic paint to paint swirls all over the top. I'll complete this with a glaze on top of it tomorrow after it dries for 12 hours, and I'll have a pretty new original serving tray!