Whether internal bitmap rendering relies on a truecolor color model or uses a color palette.
truecolor is unset,
truecolor is not used
unless there is a
for some node in the graph.
The output model will use the input model when possible.
Use of color palettes results in less memory usage during creation of the bitmaps and smaller output files.
Usually, the only time it is necessary to specify the
is if the graph uses more than 256 colors.
However, if one uses
a color palette, font
antialiasing can show up as a fuzzy white area around characters.
truecolor=true avoids this problem.