Comparing a group of photos on different colored papers helps decide which page color makes the photos "pop" off the page. Solid colors or subtle patterns are easiest. I avoid "matching" the photos to page color because they will blend together too much.
If there is a small interesting item with a distinctive color in the photos, try that distinctive color as the page color. The color of a shirt, sign, flower or sneakers may be a color choice. Try a page color that is complementary to the main color in your photos. Complentary (or contrasting) color pairs include shades of green/red, yellow/blue, green/purple, and blue/orange. You can search for a "color wheel" of 12 colors ito download to use as a guide.