Color code Project type the same way as in the project listings

Follow up on this issue: https://github.com/topcoder-platform/tc-connect-notifications/issues/63
Can we please add color to the project types in Slack, in the same way as we have it on the Listing?
<img width="390" alt="screen shot 2017-02-08 at 1 15 26 pm" src="https://cloud.githubusercontent.com/assets/12552247/22757841/3d2d78e0-ee01-11e6-9659-4bec2cadf398.png">