I love Golden Acrylics interference and Iridescent acrylic paints. They add sparkle and just the right touch of bling to my paintings. My favorite iridescent colors are the gold, copper and bright gold. They will cover over any color, light or dark and can be used opaquely or with just brush of your fingertip. The interference colors are, to me, quite magical. In the bottle (I like the fluid, the heavy body can get too thick) they look white and, on top of light colors, they barely show. But paint them on top of black or a really deep dark color and they will shimmer with whatever tint they might have; violet, blue or green to name my favorites. You can also add a little color into them to get a sparkly shade, for example, adding a bit of ultramarine blue into interference violet will give you a gorgeous luscious sparkly blue violet. And, as you look at the painting from different points of view the shimmer will change. Magical indeed!