_theme_extend.less I've had some success overriding values from the parent theme (in my case luma).
I have not been able to affect deeper changes though. I think if I could change something like
@active__color defined in ./lib/web/css/source/lib/variables/_colors.less that would take care of a lot of variables I'd have to override individually.
I've been unable to override
@active__color from my theme though. I tried creating
@import _colors_extend.less in
_extend.less, however that doesn't do the trick. How can I override