For white
- Victoria Blue B (Milk-white)
- Methyl Violet 3B–6B
- Crystal Violet (Ivory-white)
To produce very delicate shades, the moist dyed skins are subjected to a sulphur bleach overnight, to lighten the color, then rinsed, and dried. Full, brilliant shades may be obtained by dyeing in a bath of 40° C., acidulated with 2–3 grams of acetic acid per liter of solution, the following dyestuffs being suitable:
For yellow to orange
- Thioflavine
- Paraphosphine
- Rhodamine
- Safranine
- New Magenta O
For pink
- Rhodamine B
- Rose Bengal Extra N
For light red
- Safranines
For bordeaux and red