For each bathroom choose a neutral color that U see in the tile Here is how to find the perfect wall paint "match" http://www.lindaholtinteriors.com/2011/07/testing-wall-color-101/

Dear Balaji, Tried and tested colour combinations that make wood work stand out will be in contrast to dark brown. You can choose reflective colours like pale yellow, off white.. In Berger Paints you could check out 3P1844 Sauvignon White, 3P1854 Fresh Linen, 7P0185 Fabulous White. Also, the website offers Virtual Colour Painter which you can use by uploading your room photo. Best wishes and regards, Ar. Avni Gor

You can see difference between absolute white and morning glory....if you want to visualize this for your room try it on Asian Paints app to get a clear picture of your room.

Either, you can paint all the walls with light grey or white colour. Or, highlight one wall with light grey colour and rest of the walls can be white.