How to make herbal colours this holi 2020

To make red color gulal.

1. Dry rose/ hibiscus petals in the sun . 
2. Grind the dried petals.
3. Add a little flour to increase quantity .
4. Mix red sandalwood powder for a good smell. 
5. For green colour, use henna powder 
6. For yellow, use marigold or turmeric powder .
7. For saffron, use palash flower petals.