Sorry but the water line blue and white flowery tiles look old fashioned and if you're going for that kind of sandstone on the top it won't go with the terracotta tiles you have already Do like the pool and tiles that Hayda Natural Stone have posted Very nice!

Try googling 'Kitchen and Bathroom Resurfacing' to find a professional in your area that can respray the tiles for you. They remove any fittings that need to be removed and put them back when finished, they will fill any holes before spraying and if you want a true white colour, theirs will stay true white (not go yellow) because they are properly UV stabilised. They use a product that sets super hard, they're cheap and they guarantee their work! No, I don't work for them, or know anyone that does, but I have friends that have used them and have been thrilled with the end result.

Are you able to post a photo please?

My friend used Dulux renovation paint and it works beautifully, she renovated her ensuite, follow directions for a complete makeover