private Color[] alphatize(Color c) {
		Color[] alphad = new Color[10];
		alphad[0] = c;
		for (int i = 1; i < 10; i++) {
			double newAlpha = 255 - (i * 25.5);
			alphad[i] = ColorUtils.withAlpha(c, (int) newAlpha);
		}
		return alphad;
	}
Generates colors for a given {@link FcgEdge}
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/graph/renderer/FcgEdgePaintTransformer.java