Very nice, love the simplicity. One thing I would tweak though: when you punch in the numbers for brightness and vignette (instead of using up/down), the effec

Very nice, love the simplicity. One thing I would tweak though: when you punch in the numbers for brightness and vignette (instead of using up/down), the effect doesn't take place until you click somewhere on the page. Would be nice to see it auto update as you write the values.