1467566 - Theme.get() should return values for built-in themes

Status: RESOLVED DUPLICATE of bug 1435216

(WebExtensions :: Themes, enhancement)

Description

[David Durst [:ddurst]]

With the move away from LWT, it makes sense to consider the built-in themes (certainly 'dark' and 'light') as peers of user themes, at least from the perspective of Theme.get().

In our work on browser_style (bug 1458678), one of the approaches is to recommend that developers use the Theme API to get values to apply to sidebars, panels, etc if they want to unify those with the current theme. This would make that possible for users of those built-in themes.

And if we allowed it for 'default' as well, then it would work across the board -- though technically I guess the default values would be what those users would get. Not sure if there's a reason to not let all the built-ins return to Theme.get().