I just found a bunch of little vials full of colorants at a garage sale. The adult children of the ceramic artist were selling these and didn't know what they were or how to use them. The vials are clearly colorants but I'm not sure if they are similar to Mason stains. Is anyone familiar with Maxfield Dresden studios out of Glendale CA? There is also 3 glass sheets with some dark substance on them. The box says Maxfield's unfluxed gold. They were cheap but I have no clue if I can use them or what to do with them. Any input is appreciated!