Where does the Colour Indigo come from?

Related questions

1. Where does Indigo grow?
2. Is Indigo a Colour of the rainbow?
3. What color is vintage indigo?
4. Is Violet darker than purple?
5. Can I grow indigo?
6. What are the 6 tertiary colors?
7. What is special services Redc in indigo?
8. What is the darkest shade of purple called?
9. What type of dye is Indigo?
10. What emotion is the color indigo?

Tags

1. #variety
2. #history
3. #produced
4. #obtained
5. #plants
6. #those
7. #today
8. #including
9. #plant
10. #throughout
11. #indigo
12. #comes
13. #genus
14. #nearly
15. #tropics
16. #which
17. #indigofera
18. #several
19. #native
20. #synthetic
21. #provided
22. #natural
23. #species