It worked! Not knowing what the beige wall around the corner looks like I'll have to just specify based on the photos and carpet.
I recommend a fairly color along the picture wall (and maybe all the way around the cornder too) to brighten up your artwork. Use medium to light neutrals everywhere else to keep an easy transition from the halls to white offices. Regardless of your color choices, people work best in soft, slightly muddy colors that are easy on the eyes. Green is a great concentration color with a calming but productive overtone. Blue is a soothing color too, but should be used carefully in an office area to avoid making people feel lethargic. Either way, the key to this hallway is to emphasize the artwork and complement the lighthouse theme while keeping the overall space warm and neutral.
Here are my suggestions:
Picture wall- Sherwin Williams 7748 Green Earth OR 7624 Slate Tile
All other walls- 7738 Cargo Pants
If you need colors for any other areas, let me know. And let me know how it turns out!