inherit colours from calfw specifications

I have different calendars specified with specific colours for calfw, e.g. `(cfw:org-create-file-source "Personal" "~/Documents/Org/Personal.org" "medium orchid")`. These, of course, don't carry over to calfw-blocks, which specifies its own colours. Is there a way to keep events from particular calendars shown in the same colour in calfw-blocks as they are in calfw?