text changes and label color change for accessibility

Change-Id: I97484d90a143984a3e987ae12c425826e902e624
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/server-health/styles/log.scss b/app/server-health/styles/log.scss
index f0fc0ac..8d93f07 100644
--- a/app/server-health/styles/log.scss
+++ b/app/server-health/styles/log.scss
@@ -29,7 +29,7 @@
 
 #event-filter {
   .filter-label {
-    color: darken($medgrey, 10%);
+    color: $darkgrey;
     text-transform: uppercase;
     font-weight: 700;
     font-size: .75em;