སྡུག་~ མུན་པའི་~ མིང་་~ ཙམ་~ ལྷོ་~ ཕྱོགས། མེད་~ ས་~ ཡིན~ ~ །
the name because "black" is the absence of light- not
Light, Action, Illumination: These three words can be used to describe the general topics in the given texts