Comment 2 for bug 723768

Oh! and the wheel color is not "whiter" , its just transparent. So its color depends on the panel background.
And if it is previewed in the browser, it would seem whiter since the background is white.

I tried to keep the transparency appropriate for the default panel color.
If the icon is saved and previewed in EOG, by changing the background color we'd get a better idea of the color it would appear on the panel..