How to make the all the white panels become the red panel?

[2859897341 (Kumar_Larka)]

hey there i have used lunch box to get the white panels

my question is how to transforming all of them like the red panels show

appreciate for any helps.

panel.gh (61.3 KB)

[anikolo (Aris)]

hi!
use lunchboxe’s Triangle Panels B (TriB)