Return a dictionary filled with settings whose names match the string values
in the input dictionary. Optionally limit the search to the context level.
Parameters
props (dict-like) – Dictionary whose values are setting names – for example
rc.fill({'edgecolor':'axes.edgecolor','facecolor':'axes.facecolor'}).
context (bool, default: False) – If True, then settings not found in the context dictionaries
are omitted from the output dictionary. See context.