 AW: Kann mir einer sagen was das für Kathoden sind?
Es sind sehr sehr sehr wahrscheinlich RGB-LEDs aber wie die so angesteuert werden...
So ab 2:45 (und auch schon früher) sieht man manchmal das da mehr als 1 Farbe 'gestrahlt' wird um diese unterschiedlichen Farbtöne hinzukriegen.
Edit
Videobeschreibung
'These are LEDs, they can reproduce any colour (as there are sets of red, green and blue LEDs) or fade through colours, have over 20 different patterns (can't remember the exact figure, not everything was shown, some of the strobes were too fast for the camera to pick up), speed can be controlled of both the pattern/colour cycling and they are also remote control. They were a product sample of a motorcycle 'neon' under lighting kit, don't know if it went to market or not but I'm sure there is something similar/the same out there - this has 8 tubes, 6 were used above (one is behind where the hard disks are).' | 
Linear-Darstellung
