Well, here is the platter at the moment:
It has two coats of yellow and white paint on it. The surface isn't very smooth-I think using an open grained wood like red oak for this was ill considered. And it's difficult to get a razor smooth line between the white and yellow sections. I still have to put a purple line on it and I'm not sure how I'm going to do that yet. So there is still a ways to go with this.
I have to go and get some wood and some paint brushes later today and I'll head to an art store to see if I can find a narrow paint brush that I can apply the purple section with.