Faux Onyx Beads

I was SO excited about making these yesterday. I spent about three wonderful hours mixing clay and rolling it out, and cutting and stacking, and was so pleased with myself, UNTIL I BAKED THE BEADS AT 375 instead of 275!! They turned out very dark and yellowy, but to my amazement they still appear to be okay. I didn't really want to spend a lot more time working on burnt beads so I skipped the sanding part and went right to buffing. I may try these again when I'm not distracted.