Show relative units as relative units

I like that CSS-Diff show computed differences, but what about when using %'s and ems?

It's great if I can see Div A is 100px wide and Div B is 202px wide, but it would be great if CSS-Diff would show me something that would let me know the reason A is 100px wide is because the stylesheet is setting it to width: 25% and that B is 202px wide because either I've set it to explicitly be 202px wide, or because I've set it to be width: 50.25%