The ongoing search for Roy G Biv has turned up indigo and for me the search has been extensive because most of my blues come from a base of Phthalo Blue (green shade). I decided to mix my indigo to have a sample: One dollop Ultramarine blue +a mixture of Quinacridone Crimson mixed in equal parts with Ultramarine Blue. So its a dark purple mixed with the blue and then I sometimes add a little white for clarity!
This left photo is of a painting I did awhile ago and for whatever reason used this combination over my usual Phthalo blue. The third photo is of a beautiful Japanese cloth I've been keeping now for over 12 years. It is beautiful and I treasure it and SOMEDAY I will create something with this cloth! Happy searching day to you all ... drop by Jennifer Coyne Qudeen and Julie for lists of more sites searching and posting their finds!