@Override
	protected void updateOpacity(double percentComplete) {

		double remaining = percentComplete;
		if (percentComplete > .5) {
			remaining = 1 - percentComplete;
		}

		double modified = remaining * 10;

		//double remaining = 1 - percentComplete;  // start opacity towards the end
		for (FcgEdge e : edges) {
			e.setEmphasis(modified);
		}
	}
A job to emphasize a given set of edges.  This will make them bigger and then restore them 
to a non-emphasized state.
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/graph/job/FcgEmphasizeEdgesJob.java