You're right, the puke green font is ugly and looks ridiculous.
I would think that Freepers are smart enough to figure out which posts are their own when they see their nicknames as the posters. (Besides just remembering their own words.)
I find that "explanation" quite condescending and insulting.
Besides, I can think of better ways to tell me something was my post other than making my words look like puke.
On top of that, the new one-color font lacks the features of a) distinguishing text when used as a link and b) distinguishing an unclicked link from a clicked link.
And the non-shrunken font helps make the whole page more cluttered-up and difficult to take in.
I wish they would just put my My Comments page back the way it was before.
The first time I saw the puke, I thought the site had been hacked by Islamicists.