Mom,,looks good! I like the Comet color, but it might lean a little toward periwinkle.
see below for some samples you might want to try
Don't forget your bulbs. looks like you have warmer (below a 3500K) which will cast a yellow hue on everything. try a 4000K bulb for a more natural daylight color.
BM Smoke. it's a nice blue/gray
BM Silver Half Dollar
I used this color in my living room, thinking it was gray, and it's really a blue/gray,,,so if you want more blue, this would work.
here's how it looks on the wall w/natural lighting. I think it's a perfect match w/your granite
BM Solitude.
BM Manor Blue and (bottom left)
top Lt- Silver half Dollar, Top Right-solitude, bottom right, Smoke
I really love your slab you got w/all of those blue crystal deposits. it's beautiful
Q
another possible layout for shared office
Q