My 2¢ worth: first of all replace the dark blinds with translucent cordless single cell blinds in ivory or off-white--they let light through and provide privacy + some insulation from cold or heat. Clean, crisp look.That alone will brighten up this space. #2: clear the counterspace!--so much clutter! Where to put all these appliances that get little daily use? Get yourself a ss 24x20 or larger cart on wheels (see Amazon.com--Seville classic ss cart) and store little used, bulky appliances on its shelves--and roll the cart into a nearby coat closet--out of sight and way-- to be wheeled back when needed or individually carried back as needed. 3#gorgeous blue tiled walls.Don't touch them. #4:Walls: keep as is if off-white--not same as trim white white.Just a fresh coat needed.To make it "disappear," paint the radiator the same color as the wall behind it. #5Keep the white trim white--looks bright and clean.Keep kitchen door white. You might want to stop here and make no further changes #6Cabinets: I like Gast pic above on right, but too much blue for your blue-tiled kitchen...IMO. I'd go cooler and lighter...consider the light gray of the beadboard in the Gast pic above right. Beautiful hue. Don't go for the white white everyone clamors for these days.Too stark for your kitchen and too contrasty with the blue tile, too country kitchenish. #7. cabinet hardware: Look like glass knobs in pics. Go for knobs/pulls like in the Gast pic above--or similar in pewter or ss, my preference. Those "modern" ss bar handles don't work with your cabinets. #8 the round table is not a good fit against the wall. Get a small sq or rectangular ss or butcherblock-top table for that spot. Chop off the top tier of your chairs to shorten....and match their tops as they are now so's won't appear to take up so much visual space and still remain comfy--don't replace w/ uncomfortable stools.Keep white. #9. Do away with wood valance over sink window.Too country. #10 Countertops--solid color Corian type or laminate--depends on budget--don't want busy stone textures of quartz, etc. Consider a medium value cool gray. (Or maple butcherblock?). Can't see color/texture of floor.... hope some of this helps. Good luck! lisianthus' pic tho nice is too busy-cutesy for your minimalist aims IMO

I agree with everything said so far. Would suggest you get built in book shelvers on both sides of fireplace, lift tv into a slot it fits perfectly into (make sure you have power on both sides). Then it will disappear more rather than fight with fireplace as focal point. I am always disappointed with mirrors over fireplaces, they become dark, are to high to reflect much. Plus then you have three rectangles fighting for center stage. I'd say very colorful artwork instead. Wonder if you can reorient tv where the big chairs are so both tv and fireplace are addressed? Color, maybe you should decide on furniture first?

I looked at door on houzz for a short time. Seems as though a few things come into play. If you want to accentuate the vertical lines of your entrance, go vertical. If you want a more understated look whereby we see your door and panels as one -- then go either same color as door on the handle if possible and the only things showing will be the lock. I prefer a smaller handle or a horizontal plane for a handle because horizontal is a more relaxed look. vertical creates tension. So, look under: Photos, then Modern, and type Front door in the search parameter. Hope this is helpful. :=)

Consider going with tone on tone textured tiles. Keep it classical. Sometimes you can introduce a slightly darker contrasting grout color to accentuate the tile shape or design. The new trend is moving away from the subway tile look, it might date the kitchen in a short period of time. I would select your back splash tile before selecting the paint color. Paint colors I always select last, it is what pulls everything together.