I am no interior designer but here are my thoughts based on the last 4 garages I have owned. Ultimately I suggest a light grey if you are going all one color. It will hide some dirt and marks while also keeping the space bright.
1.Bare wood- hated it. Always felt dirty and never seemed finished
2.Painted 2 car garage with 2 walls dark grey and 2 walls white- Looked great but the dark grey did **** up too much light.
3. Painted a harley color theme. White on top and dark grey on bottom with orange and black stripe. It was a little too busy for me and overtime I did get sick of it. Again the dark grey soaked up a lot of light.
4. Current 3 car garage with all white drywall walls. Feels clean, bright and finished. wall art stands out well. Shows every little bit of dirt, insects, spider webs, etc.