Curved tabs add blue tint as option

[Nlk29]

Hello,

When using the curved tabs style, the tabs appear in the normal white of modern Firefox.
Could you add an option to tint them in a slight blue like ver. <52?

[MrOtherGuy]

I don't really want to do that. I think that coloring toolbars should be left to the theme and styles should preferably touch that as little as possible - unless that's specifically what the style is doing.

On a technical side, this will be extremely hard to do to make so that the gradient applies to the tab curve as well. Those old versions had a static .png images for both sides of the curve which is totally different than the method curved_tabs.css uses (because our method allows easy customization of the size of the curve).

As a sidenote, curved_tabs.css has various problems that I've been trying to solve for long time but haven't found a good solution.