The other day, I hastily assembled an HG Zaku II, much like the hastily built castles of Gaisha Castle, Ishigakiyama Castle, and Sumata Castle...
The "mono-eye sticker" included in the set was yellow, intended for Hoshimachi Suisei, so I used a Gundam marker to create a pink mono-eye.
After the Zaku, I assembled the beam saber and firearms for the Gundam, but the Gundam's stickers were also for Suisei, so I'm using them for a Hi-ν Gundam "for customization."
This "Gundam for Hoshimachi Suisei" is also planned to be used as a "starting unit" for customization, but actually, "whose mobile suit it will be" is...

[Type G Workshop] 'Hoshimachi Suisei' Collaboration Set (Part 2) | 越後浪人's Gunpla works