Haven’t tried any colorant but you could sure put solids in it like glitter. Flex coat has a product that you can purchase at Barlow’s called irredescent glitter that mixes well with epoxy and makes a beautiful mix that would make a nice filler. Also, you could buy some small turquoise chunk and do the same as a filler. Saw this done out west around Jackson Hole, WY with nice results. I tried to upload a pic but won’t let me. Says it’s not jpeg?
