Highlighting whitespace on removal with git diff

When I do say 'git diff', and I have added a line with a trailing whitespace, i get a red square box highlighting the added whitespace. (on the '+' diff line) What I want, is the reverse - so when I delete an existing whitespace, I get something similar, for example a blue box highlighting the deleted whitespace (on the '-' diff line)

Currently the only notificate I get is identical '-' and '+' diff lines, but no indication of the whitespace deleted

I know I can do this with graphical tools, but ideally would like some way using the standard console git diff - if this is possible.

I have  the following in my .gitconfig
---
[color "diff"]
whitespace = red reverse
[core]
 whitespace=-indent-with-non-tab,trailing-space,cr-at-eol,tab-in-indent
---

Thanks,