Have you tried painting some poster boards to place around the room so you can view them for a couple of days in different lighting situations? You will make yourself crazy trying to pick a paint by just painting one wall with the color. You won't get a true feel of the color around the room. I speak from experience of many years ago when I purchased 6 gallons of custom colors trying to find the right taupe to go in that corner I kept painting the sample in. Boy, can I laugh at myself now for that. DH still doesn't know how much that paint job really cost. As for the colors you have up, I like the lighter of the two. It's difficult to make a true assessment however, because we aren't seeing the other furnishings and accessories. BTW, I'm no expert.

I'm not familiar with how grasscloth would hold up in a non-climate-controlled room. Others may have better recommendations. With your counters/cabinets and with what you describe (liking reclaimed wood but not primary colors) then maybe steer toward metal, wood, grays and blacks. The chairs you have could be painted black. Perhaps find an industrial table with a metal top or wood that you can age yourself. I recommend a chair height dining room table rather than a bar table, as it can serve more comfortably for both office work and parties. If you are inclined there are many ways to "age" new wood. There's a steel wool and vinegar method you can find on the Internet that my brother-in-law uses. Real aged barn wood is expensive and in high demand. He travels to rural locations for it but has to sometimes mix in new wood with his projects and the steel wool method works well in blending new fillers with the authentically aged wood. Others will chime in with great ideas and inspiration photos for you too I'm sure.

I used two Affinity colors in our current place..(if I'm not mistaken..it was several years ago). I used Kangaroo for master bedroom, and Driftwood for my daughter's room. Love them both till this very day. But I then I prefer colors that are a bit murkier, muddy, complex, and ever-changing. Not everybody does-colors are so personal. Also they might look totally different in your place than in mine, and for sure different from a sample on a paper, or on a screen, or in a jar..you'll need to try them all first in your rooms in your light. Colors should flow, but since bedrooms are more private space, usually closed, sometimes on a different level than the rest of the house-you can go and be more free in your color choices when it comes the bedrooms. You can try and introduce other colors from your home palette a bit, in furnishings, art, etc. I'd pick a several colors within each of your daughter choices that you like too..then ask them to narrow it to 2 or 3..then try samples on the wall, look at it in different times of the day, etc., then decide. PS my teenagers also prefer these kind of colors..purple gray, green gray..darker, murkier side..interesting.

According to encycolorpedia, SW High Reflective White is a close match, followed by Whitetail and then White Flour. You can see other brands and colors here. The "e" number is how different it is from the original...the larger the "e" the less like the original it is.