Summary
It would be helpful to add a scope to the textmate grammar denoting variable read/write access. For example in typescript, the scope variable.other.readwrite is applied.
Motivation
Currently the only scope given to variable read/write access is source.java, which means users and themes cannot configure the appearance of these accesses in themes.
Additional context

https://www.reddit.com/r/vscode/comments/equyio/im_using_the_horizon_theme_in_vscode_why_do_local/