The IP is some that I bought from here. It works great on steel. I may need to make a new batch of it though. I have had that batch sitting for a couple of weeks in a covered sealed container. I mixed 1/4 of the bottle to 1 gallon of water. On the steel I have done, the coloring kinda looks like those cobalt drill bits. Blue to gold or yellow coloring. I may also have left the part in there too long. This coupled with the possible under cure should solve the problem. Here is a pic or two.
