Update Scanner

It would be most helpful to be able to define through the GUI or otherwise, the color of the highlighting globally, less importantly per site, and perhaps toggle-able if not too far fetched as a last thought. For me, allowing a user definable choice of highlight colour, would mean more comfortable reading of extended passages of changes. Having gotten used to using Update Scanner now, I find the bright yellow, while easy to spot, too much on my eyes during extended periods of reading. Thanks so much for the great extension.