Jane Doe, maybe calling what you're after "minimalism" is misleading - to yourself as well as other posters. The fact that you mention colour-washing is a bit of a give away there!
You don't mention the style of the cabinets in your kitchen, and in that room they have a significant impact on what you can do with the walls as they are so visually imposing.
Your living room furniture sounds mimimalist in quantity, but again you don't mention the style - is it modernist furniture? Leather or fabric suite? Are your glass coffee table and TV stand metal or wood framed? Do you have any soft furnishings such as curtains, rugs, cushions? And what about art on the walls? All these details will give more clues as to what your personal style actually is, and if you can look at what you already have and decide what you do and don't love then it should give you a better idea of what it is you're trying to achieve.
Having said that, you can't go wrong with painting all the walls white to begin with. White is certainly not un-creative (many would say minimalism is non uncreative either) it's a great background for showing off other colours and textures, and it's also easy to paint over if you decide on that later.