What if Hiroto later optimized the Extra Limited Change that the Core Gundam showed in the movie?
I tried to create a Gunpla with this theme in mind.
The base was the Core Gundam Set (Real Type Color) sold by Gundam Base. My goal was to build it using as few parts as possible from the set.
Even in the mock-assembled state, the colors are fairly consistent, so it looks quite put together.
I edited the image and came up with several color patterns, but I decided on the Full Armor-style coloring as it felt right.

Grand Earth Three Gundam | roid's Gunpla works