This is an extremely broad question. What exactly are you trying to ask?
Fabrics show colour because they are reflecting some wavelengths of visible light better than others. White fabrics reflect the entire spectrum well, black fabrics absorb the entire spectrum and don't reflect any light. So a light coloured fabric would be one that reflects the entire spectrum pretty well, but reflects one colour a little better than the others. Now, what are the characteristics of the stain that you would like to apply to this?