What is the reason you do not want to continue using the metropolitan grey? If you are looking at resale in the near future I would recomend keeping to one color or lighter/darker versions of the same color. Grey is a wonderful neutral and would be good to stick to so you don't end up with that "bag of skittles". Also, posting photos of the rooms in question would really help.

@Lauren E The wall tile/tub do match each other, I've attached more of close up pics. To me, they are a cream/almond/ beige. (maybe slightly pink?). t's currently painted a khaki color. The vanity top is slighly pinkish and the floors are travertine. The lighting is awful - no natural light.

Where are you located? Is your roof a redish/orange tone? You need to work with that and then improve your landscaping too. I think a Sage green color would be very nice. Maybe a light cream if you want a more yellow look. But not a strong yellow. Yellows get strong very fast. So go two shades less strength on yellows.

it's perfectly fine to paint that window trim above the window a blue( or whatever). there is no rule that says all trim in the house must be exactly the same! found this one w/blue trim to match the cabs. glad you got that light! I love it. traditionally, those old kitchens were tiled around the window 1930's spanish ranch home: This is a Tudor kitchen, but you'll notice all the color is brought in through accents. the wall color, the ceramic dishes, art, matches the linoleum. and while the trim itself was usually white, the kitchen in those old spanish bungalows were quite colorful. Too bad you didn't use this tile! I love this one w/the white cabs and your marmoleum flooring. But, since you do have so much white, think about doing a 2-3" tongue and groove on the ceiling and painting it a shade of blue (or yellow) I like this light too Any chance of you continuing the tile up around the window? If not, either paint that portion a nice blue, or do the trim in the blue (cobalt) and save up for a cobalt stove! BTW, I have a cool hanging piece that came from mexico and would fit your kitchen colors! are you near So Cal?