thanks for posting this interesting technical question. However, I think that the question would receive more qualified answers if it was a bit more specific. Most importantly, please note that pigments are generally insoluble in water and organic solvents (see e..g. the respective Wikipedia entry at https://en.wikipedia.org/wiki/Pigment). Thus you cannot analyze pigments by thin layer or column chromatography. Presumable you are talking about dyes, right? in contrast to pigments, dyes are soluble either in water or various organic solvents. In order to give you a more specific answer it would be very helpful if you could specify the individual dyes you want to analyze.