The condo we currently rent has white, four inch tiles. Nothing disappears and the grout is never clean...
Don't even get me started on the white, painted steel sink.
All this crap is paired with solid wood cabinets, which is pretty rare in this area, so we have that going for us.
Yes, that's exactly what I epoxied over for my "Calacatta Gold Marble".
There's prep work involved. You have to tape and cover the cabinets and remove the sink. Then sand the tiles for a mechanical bond, wipe it down, hit it with a coat of bonding primer, and mix up some concrete for the next layer. After that, it's Level-Quik to take out any of the remaining tile texture, then an undercoat, then the color epoxy coat (which was the most fun), followed by a clear pour and a layer of matte top coat epoxy. It's a crazy amount of epoxy. Stone Coat Countertops has an instruction video.
The first time around I used way too much bronze and brown, and the results weren't what I wanted, so I sanded the top and redid the undercoat, color epoxy, clear coat and top coat. No biggie.