Gansai Tambi Starry Colors from Kuretake is part of the Gansai Tambi line, a solid paint that you use with water. The set has 6 colors, all based on gold. The paint covers the color under it well and shows clearly on paper that is not white.
The 6 colors are blue gold, red gold, yellow gold, pink gold, pale gold and platinum. Each color is also sold on its own.
The color shows even on dark paper, so you can color with gold on black paper. The paints work for illustration, painting and calligraphy.