I like writing in purple and wanted to expand my current ink collection (I have J. Herbin Poussiere de Lune and Nemosine Alpha Centauri), so I recently bought some samples to try. I thought I'd share the quick writing I did to compare the colors. I used 3 pens, dipped the nibs in the ink, then rinsed and dried the nibs a little before switching colors. So the colors may not look as they would if the pen were filled properly.
Paper is Tomoe River. Photos were taken under artificial lighting. I didn't attempt to do any color correcting.