Take 3 pictures using a red, a green, and a blue filter for each shot. Convert them to Black and White. Combine them in Photoshop using the Channels – Merge Channels – RGB method found in the channels tab (next to Layers usually). The best result was obtained by white balancing before and after combining the pictures.
An effective and impressive example of this was made by the photographer to the Tsar in Russia, Sergei Mikhailovich Prokudin-Gorskii whos research resulted in patents for color film slides and color motion pictures.