I used epoxy + glass flake combo.
Very easy to diy.
You have choice to maintain color of your existing floor tile by using clear epoxy.
Or change the color completely to your choice.
Did the coating for 3 layers and still good until now for more than 8 years already.
Spent around 1K total for 2 bathrooms (decent size bathroom)
Another pro is that it took total around 48 hours to fully cured for the whole 3 coatings.

2 weeks ago  i bought  5L  Nippon e4 epoxy paint , tile primer  , roller brush, paint pan , silica sand . total cost 306 RM  . shopee seller.
DIY  my  3 toilet  . and kitchen table top  and  back wash area.
Am pleased with the  result .

easy to clean the toilet now.  just  fast  mop dry   
new clean  bright  look .

is a better  cheaper solution  for water proof your toilet and will last 10 year or more compared to hacking. 
highly recommend way to waterproof your toilet water leak issues due to  old age  or poor built.