LEM had hypergolic fuel (ignites instantly upon merging and stored with no special coolant) - nitrogen tritoxide as oxydizier and unsymetrical dimethyl hydrozine UDMH as the fuel) arozine 50 which burns burns a dark red opaque gas
But on the ascent there is no flame at all!
It should have looked like the drawing.
But is looks like a toy lifted by a string.
Unmanned LEM Hypothesis
Grumman's Lunar Module Truck
Lunar Module Derivatives
https://www.hq.nasa.gov/alsj/LM23_LM_Derivatives_LMD1-13.pdf