Yeah stealth... just put the creme peroxide on by itself....it won`t be `` permanently affected`` by it ....the salon I used to buy-from told me to be careful when colouring hair until I got `the hang of it` and only leave colour on for a few minutes at most..I asked what to do in the event of going too `deep`... she told me to lighten it up again using creme peroxide on it`s own...as I said, I never had to do it though. Just apply on a small inconspicuous area and see how it goes. I`ve never used anything other than salon-grade items such as Wella Koleston, because you can `control`the depth of colour by controlling to ratio of Koleston to Peroxide mixed and then timing it . If you over-lighten the colour you can re-colour the hair again....the neat peroxide should just lighten up the colour..it won`t prevent the hair from absorbing colour again..... I assume by what you describe, you got an all-blonde system in order to have `good`knots and you intended to then colour the hair all over.... I know wearers do it, but I think for newbies, just starting off with the front bit in blonde, and colouring that bit first, will be enough ...I think it`s a big-ish job which can be `problematic` for newbies.....if you feel you`re getting out of your depth, well then take it to a stylist...make sure they keep the mix off the lace though.....many of the salons which specialise in Afro womens` hair would be well-used to dealing with lace systems as many of those women wear systems.