I use a uh'..very extremely unorthodox rune page for Janna. It had started out as a test page when I was in high silver / low gold and I just never got around to swapping it out for anything else because I kind of liked it. In all honesty, it's probably a hot garbage rune page, but given my play style with her and my desire to rush out items as quickly as I can to help the team and be as effective as possible with my purchases, it gets the job done for me.
Now, I would NEVER recommend this page to anyone, nor do I encourage anyone to use it unless you're batshit crazy and want people to think you're a boosted bonobo like me, but this is what I run xDD

9 Armor Reds -- 9 Gold/Sec Yellows -- 5 MR Blues / 4 Mana Regen Blues -- 3 Gold/Sec Quints < Like I said. Highly, HIGHLY unorthodox and trash tier, but I get a lot of use out of them. It lets me back at ~6 minutes with around 1k gold so I can rush SS and start building the components for Redemption. As someone who's very anal about vision, the earlier I can get SS, the better. It means much earlier dragons as well courtesy of the vision. :3