Had a few people with questions on how heavily they should pigment their silicone for best results. I use a combination of two Fusefx colors for my internal pigmentation, but thought Id share a quick trick to gauge opacity.
Draw a dot on a Popsicle stick with black or dark ink. After you pigment, dip the stick and read the dot area immediately. Should be similar in opacity to be good when cast. You can see the dot still- but it is significantly lighter. If you can see the dot well it’s not enough pigment.