Clone yellow then back to green

almost 4 weeks ago i took 3 clones fi ma northern light plant, used a cloning gel and peat pellets then a plastic cup dome for each one moistening them each day

one of them turned yellow pretty much but a ft root popped thru the pellet then a few more, i cut the pellet apart broke away some of the soil "taking care not to dame roots" then transplanted into big pots under a 18/6 cycle and it appears to be growing yellow leafs are withering and new green ones sprouting

im new the clone game could somebody please tell me if this seems like a success and any tips on how to improve

cheers

that is what happens. your plant is using up the energy it has stored to live and to produce the roots. now that you have roots and nutes it is going back green and growing. great job!!!