Read this document to understand the whole process. Buffalo milk is used so that while painting, the color should not spread to the other sites.
The process broadly is the same. First of all Tannin is applied on the cloth by dipping it into myrobalan. Then black outline, filling is done using Ferrous acetate solution using indigenous methods. Then alum is applied on the portion where red is desired. Then solution is boiled with Alizarin to get the red colors.
After that the cloth is dried, and yellow is applied by mixing myrobalan with Alum. Blue is applied by mixing Indigo solution in an alkaline solution of Lime and Fuller's earth. To get a green, blue is applied on the solutions which are already yellow.
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