Dot: How to decorate graph nodes with black outline while filled with another color?

Question

I need help with formatting a dot graph. To simplify my question, I have a dot code here which I run through a dot tool:

digraph G
{
   TestNode [label="Test Node", shape="egg" style="filled" color="yellow"]
}

results in this:

I want to have a black outline to this node. How can I do that?

Answer 1

Using fillcolor together with color does achieve what you're after:

TestNode [label="Test Node", shape="egg", style="filled", color="black", fillcolor="yellow"]

From the documentation:

Color used to fill the background of a node or cluster assuming style=filled. If fillcolor is not defined, color is used.