I would probably stick with one color for both rooms, if it were me. I instantly thought of BM Grey Owl for what you are describing. It is slightly blue-green while still being a warmish grey. I love it, but it was too blue to pair with my pinkish carpet in my house (didn't want a pastel color combo going on!) I also like SW Passive, but it is a little cooler. If you do the blue kitchen, I would caution against a warm grey with too much pink in it (the baby room effect). I'm definitely no expert, but I just bought my first home too and have spent MONTHS researching grey paint! I ended up selecting SW Useful Grey. It is a greenish grey, which I never thought I'd pick. I guess I'd just suggest taking your time and keeping an open mind when looking at colors :) And definitely buy samples to test in your home...

Thank you for your opinions. Am going to get some paint samples this weekend. Will first try to see if I can make a shade of beige work...I really want the look of a white/carrera marble kitchen so might have to rethink paint color for entire floor IF I can't find the right cream/beige. I love the warmth of browns/beige, which is why I did not go with grey color originally in our living room area. BUT, the vision for my new kitchen is throwing me. My kitchen currently has brown cabinets so brown tone made sense when we moved in! Would appreciate any other specific paint colors to look at to coordinate with carrera marble. Thank you all!!

Dining area: Paint the wall with the arch the same white as the trim and wainscoting. This way you can paint the walls above the wainscoting any color you want. I wouldn't paint the wall behind the kitchen, as it nicely 'grounds' your kitchen in there. But you could add some color by painting the window wall behind breakfast area (and maybe the large lounge). Preferably add color with fabric and decoration. I think the current colors are kinda bland, but well chosen. (And two islands? Really?)

It isn't you, pink undertones can be really difficult. It looks to me as though you have subtle pink undertones in the carpets and window treatments, which is why the Winds Breath is working and why the Sail Cloth looked too yellow. But your kitchen floors are much more pink than your other more neutral neutrals. Here are some colors I selected to compare to your kitchen along with several colors you have already looked at. The dollops below are wheatberry, Sandlot and Kitten Whiskers. This is winds breath over wheatberry. These muddier neutrals will look like mud on your walls next to the very pink taupe flooring. I know this because I lived this. I had pink undertones in my home 25 years ago when builders beige and white was all the rage and every beige I tried turned to mud. I had pink tile throughout the house, so I was able to pick a violet taupe and it worked. It was much darker than the colors you are looking for (at that time most people used darker colors - now everyone is going white or off white). I had poor experiences with color consults from interior designers. It seems they pick the same top 10 colors for everyone - whatever is trending is the perfect color for your home, regardless of the other colors that are already there. You may want to consider using two different color. I wouldn't try to mix two light neutrals. You could do a simple clean white everywhere or do a light neutral everywhere except the kitchen area and choose a blue gray or green gray or possibly a violet gray. Rule is the cool color has to be darker than the warm flooring color. I have tested it and found it to be true in my tests. (There are always exceptions to every rule). I would test something like SW Evergreen Fog. Sorry - don't have BM color that is close enough, but your BM store can usually color match greens pretty well. I would test SW Arcadia White - sorry no BM match (No BM cannot color match a white for you - whites are always off if you mix brands) and I would test a color that BM can mix for you as a custom mix called Devine Color Icing. It is in their computer system and is my absolute hands down favorite white. (SW can't get Icing right). I have never been a fan of White Dove - never feels really clean to me, too much green - but many others love it. Hope this helped.