Soul is a light warm brown.
In large swabs there some interesting shading.
Let's take a look at how the ink behaves on fountain pen friendly papers: Rhodia, Tomoe River, and Leuchtturm.
Dry time: 30 seconds
Water resistance: Low
Show through: Medium
On Staples 24 lb copy paper there was feathering and just a little bit of bleeding.
Overall, the flow was a bit dry for me, but other than that it's pretty well behaved. There is a little bit of shading, but not much.
Disclaimer: A sample of this ink was provided by Pen Chalet for the purpose of this review. All photos and opinions are my own. This page does contain affiliate links, but is not sponsored in any way.