Will bleachkits remove hairdye from lace, that has accidently been colored with haircolordye?

You would be better to use Goldwell System Color Remover.

It removes dye from the lace, but won't harm it.
Bleach can be harsh on the lace and the knots.

You can buy it on eBay.

will the Goldwell System Color Remover get rid of the dye on the knots? I tried this today, but with a different dye remover called "oops" did absolutely nothing