Originally I was planning to just assemble it, but perhaps because it's an old kit, the finish was very plain, so I decided on a whim to paint it gunmetal.
The image I had in mind was
"a machine that's been in a humid place and is stained with oil and seawater."
I really like the MS in War in the Pocket because they're all cool and have a strong military feel.
With the old kit, the shoulders were small and I remember thinking "what the heck is this lol."

HGUC Hy-Gogg | yuuki abe's Gunpla works