I think I'll throw a few lil tubes of CA at an experiment on your behalf ...
I have on hand ....
several spare sealable containers
30+ tubes of CA
brand new can of Acetone
various colors of acrylic dye
various pigments of pearl-x powders and mica pearl
My idea would involve .... filling container (1-oz container) 3/4 full of acetone, add a few drops of acrylic dye and some powdered pearl-x or mica pearl, and then a full tube of thin CA... seal and shake well before applications.
I'll let you know how it goes if I don't glue myself to the lathe or my keyboard ....
I think the most useful colors for me to have on hand would be .... white pearl, black pearl, blue pearl, and red pearl. Most other colors blend pretty well with the golden color of the brass tube, especially yellows and greens.