I believe it's this one with a slightly different paint job:
Mr Kurz' flying glider replica

The red seems to be a colour that a Rudolph Spate took to the air with, chosen by his groundcrew to echo Richtofen, he was apparently not amused:
Späte's red Komet - 310050/V41/PK+QL

Quite readable article where one Rudy Opitz, a test pilot, discusses the Komet:
Komet Me163 - Chief test pilot Rudy Opitz tells it like it was - Flight Journal.com Page 1

Cheers,
Adam.

__________________
"Wars cannot be fought with dream stuff" - Sir Percy Hobart.