Color tail all

When running `katon tail all` app name shows first on the line. This change colors it blue, so a bit less pronounced from the rest of the log.

![1___users_assaf_projects_proxy__node_](https://cloud.githubusercontent.com/assets/5158/5272543/ca9924ee-7a32-11e4-9416-7c62d8f7c1a2.png)