Hi sanjali, sorry I didn't see this post earlier - were you able to solve this design dilemma yet? How'd everything turn out?

Diagonally positioned tiles create interest on a floor. However, be prepared to have a lot more waste than if you were to place them parallel to wall. Before you decide how to install the floor, consider the overall look, feel and style of your interior. Tiles installed at a diamond orientation communicate more of a classic, traditional interior than the parallel method. It is more a matter of aesthetics than anything else.

I would do gray walls and just make sure it has the same undertone as the tile I often paint the ceiling the same as the walls if going with a light color or if a little darker for walls I cut wall color 50% for the ceiling. I have a gray and mostly white LR and I have walls a color called Vancouver Day from C2 I then add color for different times of the year with pillows and a few accessories The wall behind the sofas I just painted in a purple from one of the pieces of art and I love it.

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