Detailed instructions for the Greasemonkey / MathML route linked to in Scott Morrison's answer. In Mozilla Firefox:
Click here to install the Greasemonkey Firefox extension.
Save this Greasemonkey script on your desktop but do not install it.
Open this file with your favorite text editor and add the following lines in the preamble, next to other includes:
// @include http://arxiv.org/*
// @include http://front.math.ucdavis.edu/*
Optionally, query-and-replace all "script" by "italic" (including the quotes). I had to do this, otherwise the mathcal letters would not show.
In Firefox menu, File > Open File, navigate to the edited script and open it. Greasemonkey will offer to install it. Do that.
Enjoy your daily arXiv experience in living color.
The default Windows / Firefox fonts worked better for me than the STIX fonts mentioned in the link from the other post. Minor problems:
- I had to replace "script" by "italic" as described in 4 above. I don't know if installing additional fonts would help, the STIX fonts didn't.
- The math fonts could be bigger. I tried to fiddle with the script to accomplish that but couldn't solve this.
- My Firefox is a little heavier now that I added Greasemonkey. I can always disable it though by clicking on the monkey face.