I've never had a dedicated rune page for jungling as mundo, but I want to get some runes that will allow me to maximize my efficiency with him in the season 3 jungle. Currently I run atk damage reds, armor yellows, magic resist blues, and atk damage quints. What would you recommend I change, if anything, to improve my mundo's power in the jungle?

Get some mana regen for sure.

I have attack speed marks. They changed my jungle clear from this sucks until warmog to omg this is fast.

http://www.lolking.net/summoner/na/31580805#runes
These are my rune pages and masteries. I use rune page 9 for Mundo and I use the Mastery Page titled "Jungle Tank No Blue." I usually rush tier 2 boots then warmogs, but I'm thinking about rushing spirit visage first to give me more sustain in the jungle. I'm pretty experienced with Mundo and I have about a 70% win rate with him in ranked. If you have other questions about Mundo feel free to add me and I can help you out.

http://www.youtube.com/watch?v=nBaRUV9SGCU