I suppose you could paint however, that will not solve the issue of color in your space. You don't even have any art in the space with color. You might not need to paint if you have art and texture in your rooms.
I try to incorporate these basic earth items into every room either with furnishings, art, accessories, wallcovering & rugs:
Stone or Marble
Metal
Natural Fibers
Wood
Ceramic
Glass
Leather
Floral (Live or Faux)
They ground the room and make it more interesting to view. I would do this first before I considered undertaking a paint job.
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