Specialised Model Paints
HMG Paints of ManchesterOriginally marketed by Games Workshop in a flip top bottle these paints have reappeared under the Coat D'Arms and Foundry Paint System brands. Both can be found mail order on the Internet. FPS from Foundry's web site.
VallejoVallejo make several ranges of model paints. "Model Color" aimed at they historical modeller and "Game Color" aimed at the fantasy and science fiction gaming market. they all come in dropper bottles handy for dispensing just the right amount of paint. You do need to make sure you keep the nozzle clean though or you can end up with a surprise.
Vallejo can be found mail order on the Internet and it many Hobby stores.