Ceramic mugs

[Dagar]

I'm replenishing ceramic mugs for a freinds business.
12 ounce "c" handle mugs that i want to photomask and sandcarve logo and names on mugs.
My question is what can I paint in the logo and names that would wear well and be safe as far as toxins.
I would like something I could paint and cure in house with a capability 400 degrees f. max.
Can you give me any ideas.
Thanx...Gary

[Swampy]

Rub n' Buff (http://shop.ebay.com/?_from=R40&_trksid=m570&_nkw=Rub+n'+Buff&_sacat=See-All-Categories) ftw.

[re-vit]

my girl just picked up some more "ceramic paints" from the Hobby Lobby the other day. she did this to some of our plates, and they stood up to about a year of abuse. you paint and "fire" it on in the oven. i like this product, but sorry... can't give you any specifics. the most awesome plate she did by far was nanerpus. (http://www.youtube.com/watch?v=ur0LENvY5TE)