I had a total of 400g of fabric. I made a solution of 10g blue dye in approx 1 cup of water. The 12 strips of fabric were each scrunched into a jam jar. I poured a third into another cup, topped that cup up with water and poured it in jar 1. I then topped original dye back up to full, pored off a third into separate cup again, topped that up, pored into jar 2. Topped original dye back up etc. this same process was then done in reverse with yellow. Sounds complicated but you get into a rhythm. Measurements were very approx but fun results. Am thinking of doing red and yellow next.