I fully painted the MGSD Destiny Gundam in Spec II colors. I primarily used water-based hobby paints with an airbrush, and added Magic Lumino Paint so the joints glow red only under black light. For the wings of light, I used Vallejo's polarizing paint after a gradient painting.

I really like the red glow of the joints.

The first image is from a digital diorama maker.

The last one is a regular photo taken with a camera.

Water-based full paint job: MGSD Destiny Gundam SPEC II | コドオジ's Gunpla works