Any photos I do on my finished models, I do outside in sunlight, just to get realistic shadows. If you try to duplicate sunlight shadows in one lighting condition, I feel they look funny with other lighting.
You can weather that solid blue to add some interest. I mix up a whitened mix of the color and airbrush just a very thin coat on the top of the fuselage (while the canopy is still masked, top of wings, and top of horizontal tail surfaces. On the top of fuselage area, I round the corner a bit so an even lighter coat goes on the upper fuselage sides. This lightened coat represents paint chalking due to sunlight exposure.
Other weathering also enhances such monochrome paint schemes- oil and hydraulic stains, exhaust stains, etc.