There are companies who do it. They bring a machine that grinds the surface & then apply the stain in an assortment of colours . My daughter helped a friend do their bacpsement after watching a you tube video.
Irene, how was this process done?? I have a TON of concrete. it would likely be less costly to do something like this than to remove/replace with new materials. Input, please!
Irene Ank