Actually, I did find something:
https://youtube.com/watch?v=ybR3VAvBkXY&si=Ay6j4w63DKsCXteh at 5:44 (for about 10 seconds);
sorry, YT app seems to lack timestamp-link feature.
The comments on that video are neither nice nor transphobic, as everyone's just interested in another clip that started beef between LMG and Gamers Nexus instead.
FYI I'm now using eSun GITD but the non-rainbow variant; just the regular green one.
Orange, and especially blue, have basically no glow to them whatsoever, so don't use those.
This is the one I'm now using: https://esun3dstore.com/products/esun-luminous-pla-1-75mm-3d-filament-1kg?variant=42987305926871
It's pretty good, an performs a lot better than any of the rainbow ones, and better than the green one from ERYONE