[Therion] Redefining PENA...PEND to draw lighter

[Michael Wasmund]

YES!
   symbol-colour group all [60] #makes everything grey
does the trick. Thanks, Bruce!

Regarding Footleg's comment:
Therion indeed turnes "black" bitmaps into "grey" bitmaps, see attached
example,
where I inverted the colors of a B/W bitmap.

Perhaps this is something which could be improved in future versions?

Michael.
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