Documentation on what can be done with Source objects in terms of science

[AstarVienna]

I would like detailed documentation on the properties of source objects. Looking at the code and 
exploring with dir( src ) only gets me so far… 
E.g. can I create a color-magnitude diagram from a star_grid() , a cluster() , etc.
On that topic, can I directly extract what the colours should be from the source object? 
I.e. without initiating the OpticalTrain() ?

Uncertain whether this should be added to the ScopeSim_templates general docs, or to the ScopeSim.Source docs.
As ScopeSim_templates is supposed to be the portal for scientists, it would fit best here (imo, KL)