Blueprints of hololive members' new idol costumes "Colorize" have been revealed! There is also a backstory by illustrator Orudan.

Blueprints of hololive members' new idol costumes "Colorize" have been revealed! There is also a backstory by illustrator Orudan.
 Illustrator Orudan performed at the music concert "hololive 6th fes. The blueprint of the "Color Rise Costume" that was unveiled at "Color Rise Harmony" has been released....

The linked article is in Japanese.