Agree whole heartedly with the above.
This is what I do. I cut a small piece, couple of inches or so, and wet it down and rub it on a piece of white fabric. If color comes off I wash, if not I don't worry about it. I've only had a hand full of fabrics over the years that have run.
Batik users should do this for all batiks. Some run pretty bad. Just my opinion.
