No canned responses text color fixed #594

Right now it's almost impossible to read the text:

![](https://d1015h9unskp4y.cloudfront.net/attachments/a243cae7-ae93-4477-8524-b9f16976fb90/canned.png)
Merge pull request #216 from lachlanjc/patch-13

No canned responses text color fixed #594