A question when your tomme tippie light lights up to warn it needs changing how long until it starts flashing and needs changing immediately

Light or dark? My natural color is dark but my current hair is the picture on the left. I need to get it done (as you can see) because my roots are growing. I'm just not sure if I should stay light or go back to dark.
kinda need a personal chat. going thru a few things and really need to know if I'm doing the right thing or if I need to change some things.....
Still need a dresser and change table and crib, diapers, formula, bottles etc
What some things I need to change after marriage?
What baby changing bag has everyone bought?
Feel free to post pics below, I'm in need of some inspiration 😁
About a week maybe even longer a week is the longest I've left it haha xx