Adobe is a really interesting dark yellow, almost a mustard yellow but not quite.
In large swabs there the ink almost looks green when heavily pooled.
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: Low
On Staples 24 lb copy paper there was feathering and just a little bit of bleeding.
Ink swabs for comparison, left to right (top to bottom for mobile RSS): Robert Oster Aussie Gold, Colorverse 35 Adobe, and Robert Oster Green Olive. Click here to see the Colorverse inks together. Both Aussie Gold and Green Olive are pretty good matches, but both are just a little bit lighter than Adobe.
Overall, since it's a darker yellow it's surprisingly usable. It's pretty well behaved, and matches the yellow Jinhao Shark pen really well.
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.