public Color getEdgeColor(String edgeType) {
		return edgeColorMap.getOrDefault(edgeType, defaultEdgeColor);
	}
Returns the color for the given edge type
@param edgeType the edge type whose color is to be determined.
@return the color for the given edge type.
Ghidra/Framework/Graph/src/main/java/ghidra/service/graph/GraphDisplayOptions.java