Try Low Viscosity acrylics (aka Acrylic Inks) - used as a very thin paint or to refill acrylic paint markers, and they're compatible with all Acrylic products.
Sets of five 37ml bottles, available in four colour schemes.
Acrylic Ink Sets
PriceFrom C$25.86
"Mixing" Set of 5:
- Burnt Umber
- Titanium White
- Arylide Yellow Medium
- Naphthol Red Medium
- Ultramarine Blue Classic
"Bright" Set of 5:
- Magenta Light
- Phthalo Turquoise Light
- Green Gold
- Arylide Yellow Light
- Napthol Orange
"Metallic" Set of 5:
- Iridescent Bronze
- Iridescent Copper
- Iridescent Pale Gold
- Iridescent Pearl
- Iridescent Silver
"Landscape" Set of 5:
- Burnt Umber
- Burnt Sienna
- Transparent Yellow Oxide
- Phthalo Green
- Cerulean Blue (Hue)