Hyperlink formatting/styles reset when replying

[ennuipreneur]

I'm trying to create a custom Hyperlink style - font, colour, weight, ect. One problem - when I reply to an email, often this hyperlink style is reset to the base default style. I've also noticed this has happened with "Quick Parts" I create - when replying their hyperlinks change to the base blue which is pretty unappealing.

How can I override any changes such as these so my hyperlink style will never change?