Farrow & Ball Elephant's Breath could definitely be another paint top of my list.
Floating shelves which slightly wrap onto the wall, would look nice in the alcove of the guest room
Make any slab of wood a floating shelf with a tough and invisible custom floating shelf bracket from silicate studio. Works especially well with reclaimed wood. www.etsy.com/shop/silicatestudio #reclaimedwoodfurniture
I just built a custom color palette with myColorStudio™ from Kelly-Moore Paints.