@Override
	public Color apply(FcgEdge e) {
		if (e.isDirectEdge()) {
			return getDirectEdgeColor(e);
		}

		return indirectColor;
	}
Generates colors for a given {@link FcgEdge}
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/graph/renderer/FcgEdgePaintTransformer.java