dyes seeds pigments

http://internt.nhm.ac.uk/jdsml/nature-online/seeds-of-trade/page.dsml?cat_ref=&origPage=&origTimeID=&origTimePoint=&origTpTitle=&page=wild_relatives&ref=dyes&region_ID=&section=crops&time_ref=

Indigofera arrecta Hochst. ex A. Rich. is a native of Ethiopia and commonly cultivated in tropical Africa; it has red-violet flowers and rounded pods. This species is often called 'Java indigo' as it was formerly extensively cultivated on Java.
Indigofera suffruticosa Miller is a native of tropical America and has been introduced into Asia and tropical West Africa; this species has yellowish flowers and straight pods.
Indigofera argentea Burm.f. is a native of Eygpt and north Africa and is extensively cultivated in that region. It is a very hairy plant with orange-yellow flowers.