CentOS Art Color Tweak

The selected colors seemed to be mixing bold and not bold, even among elements that should be the same color. This diff should fix it.
Before:
![screenshot - 09242013 - 06 45 16 am](https://f.cloud.github.com/assets/2435101/1200235/914dcbde-2521-11e3-8488-82a56f41115e.png)

After:
![screenshot - 09242013 - 07 01 05 am](https://f.cloud.github.com/assets/2435101/1200249/c6e155f4-2521-11e3-9942-fd572890b263.png)

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Also my branch had even more softening of the Fedora art, which could be elided if desired.
![screenshot - 09242013 - 07 02 24 am](https://f.cloud.github.com/assets/2435101/1200258/f9890d94-2521-11e3-8d88-46ae9af3f622.png)