I recommend using Paint & varnish remover, They will probably be the most effective at removing the paint.
If the tiles are glazed, just scrape it off after rubbing with Goof Off for a minute or two. If the tiles are unglazed, it may not come off at all/
If it is vinyl tile and it's latex paint, rubbing alcohol will remove it. If it is a ceramic or porcelain tile, you can carefully scrape it off or if it is also latex paint, the same thing,,,alcohol will remove it.
Paint thinner will take off the oil based paint, but first test it in a corner to ensure it will not damage the face. Glazed tile shouldn't be damaged from paint thinner, but you would want to be sure.
It depends on the paint that was used to paint the tiles originally, but usually a methylene chloride stripper will take off an epoxy used to paint tiles and not harm the tiles. Use strippers only in a well ventilated area with protective clothing and eyewear.
a beige or off white color.
To install tile over acrylic paint, the paint must be sanded so that the surface is rough instead of smooth. Then the paint must be wiped down so that there is no paint dust remaining, after which the mastik for mounting the tile can be applied.
You can remove oil paint from ceramic floor tile by using paint thinner. Wet a soft cloth with paint thinner and rub it over the paint stain until it is removed.
There is no paint that won't wear off soon in this application. The best you could get would be an epoxy paint,and even that won't last long. -That's why they do floors with tile !
No, it will not adhere properly.
You can paint most tile adhesives. To make sure you get a good bond, first use a small brush to prime the adhesive with Kilz or Bullseye Primer. After that any paint will stick firmly.
No. The tile resisist a water line stain. While paint does not.
You remove oil based paint on tile floors by using a strong detergent mixed with water and a soft cloth
Possibly because the tile adhesive wasn't totally cured, or the oil base paint wasn't sufficiently mixed. I have used oil over tile adhesive and it worked for me.