Diff command/pager settings

Is there any way to change the way diffs are displayed?
I already google around and searched the issues of this repo but found nothing.
I have [delta](https://github.com/dandavison/delta) setup in my `.gitconifg` like so:
```
[core]
pager = delta
```

Is there any way to change the gv.vim diffs to also use delta as a pager?

This screenshot sums my problem up pretty well:
Left is gv.vim diffing the last commit and to the right is the output of `git diff HEAD~1` which does the same.