I have ACE Snickerdoodle and love it, Michigan Dunes, the color one darker down the strip is nice too. I think Ace Barley and Summer's Tan are great too - a tad more yellowy, maybe. I also just used Ace Flat Sensations (they're washable flat line with Scotchguard in it) and it looks great. After curing a month supposedly I will be able to wipe it down and anything on it will come right off - spag. sauce, crayons, dirt, lipstick (don't know exactly how that would get there, but even anything oil based will come right off, I'm told!) I also liked SW Muslin and an old SW Martha Stewart color called Pannier is lovely. HTH, kpk

Oh, and I saw the suggestion of Mayonnaise by BM. I have that in my mudroom and looooove it (lots of natural light and vaulted ceiling). Mudroom BM Mayonnaise:

Actually, the opposite is true. A deeper color is going to feel warmer and brighter in winter months and lighting, while light colors will feel cold and washed out. For example, I live in NE, also a cold, snowy climate in winter. When I first bought my house, I painted the "winter living room" (LR used in winter, versus the porch used in the warm months) BM White Sand. It was blah and cold. I got cabin fever. Last fall I repainted that room using BM Lenox Tan. What a transformation!!! I never wanted to leave the LR. NO cabin fever. It was warm and cozy and just wonderful (BM White Dove trim). The LRV of Nantucket Gray is very close to the LRV of Lenox Tan, so the light play would be similar. This is all especially true if the room you are painting doesn't get a lot of natural sunlight.

Sorry I didn't have the opportunity to answer last night. I think that your stone looks much less warm because of the beige currently next to the stone. Color is never isolated, it plays with the colors surrounding it. It is also better to look at color from a bit of a distance. To make your final decision, use the painted samples that you have and tape them 2 at a time to the garage door. Step back, decide which of the two you like best and then replace your least favorite with your next sample. Leave a bit of distance between the two samples. For neutrals, because their undertones can be so sneaky, I paint large samples. 12x118 or larger. I like to use 140 lb watercolor paper - it doesn't get warped and has a nice tooth to it. If it is a bit curled I place a piece of parchment over it and iron it flat. https://www.michaels.com/canson-xl-watercolor-pad/M10145805.html I would also suggest reading a review by kylie m interiors on SW gray-greige. https://www.kylieminteriors.ca/sherwin-williams-best-gray-greige-paint-colours/ Always find her advice on paint colors to be dead on. To do my own evaluation of your stone and paint colors I took a screenshot of the stone and copy/pasted it into excel. I then pulled the RGB values from the SW web site. I entered those numbers into Easy RGB and took snapshots of the convert page from Easy RGB for each color and placed it next to the stone screenshot. . Of the samples I personally like Modern Gray and Wordly Gray. I love Versatile Gray in the photo, but I tend toward taupes which means that this could go pink. The hue measurement shows that It is on the brink of having pink/purple undertones. Please understand that every computer monitor is different, so machine comparisons are never as good as real painted samples, but it can give you direction. If you like something but it is just a bit off you can use tools like Easy RGB to find a similar color that is just a little lighter, a little less green or a little more gray.