Mapei UltraCare Polymer-Modified Colorant and Sealer for Grout Joints - Charcoal
For use on sanded, Unsanded and epoxy grouts
Covers up to 300-sq. ft. depending on the size of tile and width of joint in a single application
Changes existing color and seals grout joints
Ready for foot traffic in as little as 2 hours
One sealed new; the other used about 15% all for $25 OBO