There are many frustrating things when building Gunpla on a daily basis.
Among them is one of the many dilemmas:
"What color (which shade of gold) should I paint the Hyaku Shiki with?" (or so I think).
In the TV version, it's more yellow than gold, and that was the case with Gunpla at the time as well. Even with the same Gunpla, the plating and coating can vary greatly in color.
However, one day, an answer (?) suddenly appears.

What colors of gold are there?! | サイハーン・イツダヨ's Gunpla works