Experiments in a more colorful, flat theme

Also spaced out icons in navbar
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Hey Josh,

Worked a bit on colors and layout, so please let me know what you think. I also noticed that not all parts of the info box get filled out when a prompt is answered, but I was too focused on the CSS to meticulously note down what was missing when. Haven't tested at all on mobile - kind of afraid, really. Just wanted to elicit feedback given that this is probably quite a different direction visually speaking. The basic idea was to flatten and colorize, and associate each prompt with a distinct color and region of the screen.

![image](https://f.cloud.github.com/assets/34575/1780849/7442822c-6884-11e3-8417-847d6035ba36.png)
![image](https://f.cloud.github.com/assets/34575/1780851/89452bd4-6884-11e3-82f7-02c013abc385.png)

Yes, I am NOT a designer.

Thanks,
Vishal