made all content labels consistent font & color. darkened color of labels.

Change-Id: I4b6a083b2179679c3e550ab97151818e1465506b
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/server-health/styles/sensors.scss b/app/server-health/styles/sensors.scss
index 2d5e2ce..7ee09cb 100644
--- a/app/server-health/styles/sensors.scss
+++ b/app/server-health/styles/sensors.scss
@@ -76,6 +76,7 @@
   .content-label {
     font-size: 1em;
     margin-left: .8em;
+    color: lighten($darkgrey, 10%);
   }
   .sensor__reading {
     @include fontCourierBold;