Used some " Precut Cloud Camouflage Masking" [ https://www.usagundamstore.com/products/precut-cloud-camouflage-masking-3-small ]. Left the dark runners unpainted. Really happy with how it turned out. Might want to use all matte paints next time as the gloss brown I sprayed was a little thick. Going to add some decals and weathering next.
Added some random leftover sticker decals and then shot some snowy sunset photos with the nice camera (Canon 5DS, 35mm F2.8 and 100mm F2.8 macro lenses):