Not sure what to put as title but has a bit to do with colour correction and replacing footage

I have 2 clips that I have edited in a way that they switch slowly between the clips and then progressively speed up. I have done it so at the end I literally have 1 frame of one clip then another frame of another clip. The problem is that I forgot to do colour correction on both clips before I edited them. This whole process took a whole day to edit and I would really like a way to do it. I tried selecting multiple clips to colour correct but that didn't work. My only thought was that if I got the original clip and colour corrected that and then somehow replaced the colour corrected clip with the original source clip e.g. changed the name to the same and save it in the same file location. Would this work or would premiere not accept it? Please help!!!