ivan i'll make a tutorial right now and jenny will react Jenny Step 1: get a sander and clean that concrete really well Jenny why? Do you think welfare is simple ivan Jenny Step 2: Buy concrete dyes (2 colors) and spray applicator Jenny Are you sure about it ivan Jenny Step 3: tape plastic to walls Jenny i know ivan Jenny Step 4: Spray the first color (I think the lighter of the two but the instructions from Behr or whereever you buy the dye will tell you) and let that cure Jenny ivan: yes I am ivan Jenny Step 5: Spray the second color and let that really cure (i think when i said cure before I meant let it dry) but this you actually want to give a few days especially before you put your hot tub down there Jenny Why do you hate me? ivan Jenny that's it ivan I forgot Jenny Step 6: You use a roller to put some kind of shellac over it. 2 or 3 coats. THAT's what needs a few days to cure. Jenny Well, that's funny. So do I https://pic8.co/sh/1cyZzG.JPG Finished Product.