I would gave them credits for trying.
Gundam Breaker Battlelogue got this 'issue' happen due to going with plain color scheme.
Command Qan-T vs. Barbataurus probably the best example. They're looking like this (thumbnail).
In fight? It became black things vs. black things.
Not Obari fault. You wanted flexibility of GN Drive and Alaya Vijnana animated under limited budget? Plain color scheme it is, as you can dodge some details when needed (this series of ONA already on Gundam YT channel if you curious). So if this AU narrative done well within CG, it probably can serve for other series side-story or AU mechs introduction before tackling hand-drawn action; feels weird there's brief focus on damage from Exia's luster sword just for sake of details.