Re: Change colors to white on black

[Graham Percival]

Jan B wrote:
> i need the output from lilypond white on black (for special presentations
> with OpenOffice Impress).
> Of course i can change the colors with i.e. Gimp, but we have to make many
> many presentations.
> So i want to include a template to change all colors, but how can i change
> ALL colors?

It's easier to do this with a command-line image processing program like 
imagemagick.  Try

convert foo.png -negate bar.png

You can easily make a shell script to change all your files.

Cheers,
- Graham