Illustrated is a prototype of a blue on blue (blue2) cup with a bottom heavy foot that I made at the request of a customer. The intent was that it could sit well and the extra weight would keep the conical form from tipping over. The walls of the bowl are rather thin and even with liquid in the pot, it is rather steady and sure footed. The blue2 is not exactly 100% accurate as the vellum glaze is made using copper and the streaky, runny blue is made using cobalt, either way, they both turn blue in the firing. I always enjoy making copper blues in oxidation from Persian blues to these vellum blues making for a range of blues that run from the soft tones to the harsh and they are a fraction of the price of using cobalt. In the end it doesn't matter how you get there, blue is blue.