Before this patch, the symbols were rendered black on dark background.
Previous images were edited like this:
1. The colors were inverted with GIMP's “linear inversion” method.
2. Image files were optimized using “optipng -o7 -zm1-9 -strip all”.
Co-authored-by: ROllerozxa <rollerozxa@voxelmanip.se>
Co-authored-by: rubenwardy <rw@rubenwardy.com>