My input dot file is:

digraph G { a [style=filled,color=blue] }

That should be a single node with a blue fill color. But the output with dot -Tplain is:

graph 1.000 0.750 0.500 node a 0.375 0.250 0.750 0.500 a filled ellipse blue lightgrey stop

This is a single node with a light grey fill color and a blue outline.

It's only a minor problem, because I can work around it by specifying the fill color explicitly in the dot file:

digraph G { a [style=filled,color=blue,fillcolor=blue] }

graph 1.000 0.750 0.500 node a 0.375 0.250 0.750 0.500 a filled ellipse blue blue stop

This is with graphviz 1.13 from Pixelglow's Mac OS X version. Haven't tested other platforms, sorry.
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