I don't know how's with Pi 3525, but with my Pa 3515, the light is always blue.
And when I use it, it turns red.
When I brought it, I have installed Ubuntu, and later on Wincrap Sucksta (Windows Vista) together with Ubuntu.
I never had to install a driver, just press Fn+F7, and everything turns on/off.
In Ubuntu, just install and run Cheese.
And in Vista, just install and run Skype.
And everything works, as long as the light is blue (and red if it's used).
I think it would be the same with Pi 3525.