Very interesting... I admire your spirit of experimentation with the materials of pottery and look forward to seeing your work as you develop this idea! Thanks for sharing with us.
You can get mason stains and air tight jars and mix the mason stains into your slip and make colored slips, you can alter the colors by using less percentages of the mason stain, just a thought!
Hi Tammy Jo. Greetings from Iceland. :-) I love these, I am definitely going to try doing this and perhaps use stains as well as underglazes for the colors. Thanks for all your videos! They are so inspiring to watch.