I buy my batiks at quit shops, but all have had dye issues. Basically, I don't want to make a quilt that may have that issue. Color catchers are great, but in my experience, it's just easier to buy non-batik and rinse in hot water once or twice (if there's a dye problem). I'm on the fifth rinse with color catchers and a turquoise batik! I soaked it 5 times before that. The resultant color is okay,but way not what I bought. So I'm off batiks.
Edited to add: hot water because it will do the job quicker...gets out the most dye and shrinks the most.IMHO