I bought black fabric with white polka dots. What I really want is black with yellow dots. Here is the question, if I dye the fabric with yellow dye will it change the color of the black? I'm hoping that someone has had experience with dying fabrics and can answer this for me. Thank you.

I would do a test strip before I did all the fabric. Just a thought.

First of all, is your fabric 100% cotton? If not (poly/cotton blend), the dye may not 'take' evenly.

Is there a way you could test it out on a small sample?

It is 100% cotton. I suppose I could do a test strip. Thank you for the answers.

I don't think the yellow will affect the black, the only thing that Might happen is the black may bleed and affect the yellow dye.

I didn't think of that. Do you think I should wash it first?

Yes you want the fabric free of sizing and chemicals before dying. When I was in school we learned to Batik and Black was the very last color we dyed because it has all colors in it. Yellow was one of the first colors we dyed. I would test the fabric. But I am thinking that you will have no problem dying the white yellow. You could even "paint" the yellow on with a brush.

Buy the fabric you want. This is wayyyyy too much work. Time+money. I'm alll for saving a buck, but this is too much...

Never tried it, would like to see the outcome.

Wash it first to remove the sizing and DON'T use fabric softner. Then try a test strip. Might be a lot of work but it will be creative. Even if all the dot's don't come out the same color it will make it interesting.