I found this earlier while installing Sage RSS.
www.hicksdesign.co.uk/journal/sage-on-os-x
(Formatting by Google) 
For those of you out there who was Safari-like CSS feeds... Now looking for a Feedview compatible one for the RSS feeds I don't bookmark before reading.
This is for Mac right?
For Firefox... All versions of them. Just install Sage from http://sage.mozdev.org
i just tried this, and the only thing that changed was the layout of the output page.. i'm not getting the icons to the left of the links in the sage bar... pc here
Read and follow the instructions carefully and make sure you add the stuff from "Add to UserChrome.css" to UserChrome.css and not the UserChrome-example.css file.
yes i did read the instructions carefully, so i knew which file needed to be edited. thanks.
regardless, i still had trouble, so i went to a page that was reffered by the one i nthe first post, which edits the sage.jar file- which makes more sense to me. unfortunately it was an old version of sage.. so ive posted the latest version (1.3.5) with the new icons.
all you need to do is replace the sage.jar in its respective folder, and voila!
credits go to: http://www.fuegodesigns.com/blog/index.php?p=64
edit : i'm thinking about making it so that the greyed checkmarks dont even show - i think that would be a lot more easy on the eyes, and perhaps more mac-like.
heres the version im using now, without the grayed checkboxes.. it looks much cleaner this way..
here you go :
I'm using a PC and I can't find where to put the sage.jar.
Open Firefox, go to Tools -> Themes and drag the sage.jar in your Themes dialog. After installing, select the theme and restart Firefox. Enjoy!
are you sure about that? i thought only themes could be installed under themes...
i installed this by going to your documents and settings folder/application data/mozilla/firefox/profiles/XXXXXX/extensions/XXXXXXXX(sage folder)
and just replace the existing sage.jar
You have to install the Sage Firefox extension first...
Go to: http://sage.mozdev.org
Install the latest version, then either follow the instructions on the link I gave you, or search your PC for Sage.jar and replace it with the version posted in this thread.
Aqua-Soft Forums