Change #c4c4c4 text to a darker color for readability
We currently use #c4c4c4 for buttons and text around the site, but it doesn't seem to have enough contrast with the white or light gray backgrounds: <img src="/uploads/0a041ba3a60f5a2a148f66ffd01c6cd0/Screen_Shot_2017-09-20_at_12.44.37_PM.png" width="500px"> Currently looking at it on the MR page: ![Screen_Shot_2017-09-20_at_12.48.27_PM](/uploads/103606f2bc6b4d9198a1270294ae5bd5/Screen_Shot_2017-09-20_at_12.48.27_PM.png)
issue