I searched high and low for the same thing, and eventually decided I wanted a pebble floor instead. But I did find these: Marazzi Timeless Collection Calacatta Pearl Hex Glazed Porcelain Tile Naxos Sculptur 2x2 mosaic Exedra Calacatta 2x2 mosaic Pental Marvel Calacatta Extra mosaic Not sure if the Naxos and Marazzi are still available anywhere. There is also this Merola tile at HD - don't know how it looks in real life, but might be worth a look Here is a link that might be useful: Merola Marmoro White porcelain mosaic

If you use a rectified porcelain, you can use the same kind of thin joint as with natural stone. Additionally (I just learned this, this morning at a jobsite I was called to to take a look at for other reasons), polished rectified porcelain will also be much more slip resistant than natural stone. (I found out because I was called to look into other problems at a school theater lobby that was just built this past summer, and tiled with a high polished rectified porcelain which, according to the architect's information, met the ADA code for coefficient of friction (slip resistance). Also, where is that term "butt jointed" from if this cannot be done with tile? There are certain wall tiles that are made with lugs on their sides that when butted together, will give a uniform joint throughout the wall. (Coincidentally, the same size joint-- 1/16") One other thing to say about granite. I've both had a granite front entry myself, as well as installing the one in the pic below in the home of a showroom owner I used to do alot of work for, and neither of us ever had problems with people slipping on them: Also, if you're really worried about the slippage factor and still want granite, check into flame honed. It's more of a rustic finish, but still a beautiful floor.

IMHO, I would dig out the tiles and replace them. Can you paint? Sure, but it IS just paint, and tends to wear away. I suppose you could use an epoxy-type, but I still vote for some nice, new accent tiles.

You can paint them, but keep in mind that they will not be nearly as durable as the unpainted tile. I would not recommend painting entire tile floors, but accent tiles here and there you may be able to get away with. Follow the normal prep process for painting anything slick....clean, sand, dust, prime with bonding acrylic primer and finish with two coats high quality acrylic paint in satin or higher sheen depending on how shiny the current tiles are.