I think I have some old connection or pichle janam ka saath with White walls and Blue doors!
I didn't even know just how much I was inclined towards the blue colour till I got busy constructing Ibaadat, our Delhi home. Until then, I thought I liked Pink, or to be more precise Fuchsia, the Rani Pink shade.
But with Ibaadat, and to every passer-by's delight, I have introduced the distinctive Santorini blue that is delightfully offset by the white walls. It, indeed, is a sight to behold.
Besides the ones you see at Ibaadat, here's a rather nice picture of a blue door against a white wall, from the trove of my Facebook friend Goncalo Pombeiro!