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My wife and I did our bath many years ago when we first moved in the house. Somehow pink, blue and black just did not cut it for us in the early 80's She used regular latex paint and sponged painted the walls. Using the blue tiles as the background color mixing black into it along with some pinks to bring in the toilet, tub and sink. It remained that way for several years until I finally got around to replace everything. The walls held up fine. The floor was done using stick on tiles.
Painting a tile floor is a bit harder as it must stand up to ongoing traffic. So you may want to try something different in that area.
Thank you so much,sounds like a plan to me!
I have used a company called Miracle Method. They specialize in this type of work.
They have franchise locations all over the country.