fix(FEC-11371): moderation submit button on Player is not WCAG access…

…ibility compliant (#4236)

**issue:**
moderation submit button on Player is not WCAG accessibility compliant - contrast between background color to text color is low.

**solution:**
changing bg color of the button to darker shade.

solves FEC-11371

skins/kdark/css/layout.css

@@ -2058,7 +2058,7 @@ background-image:  linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transpa
     -webkit-border-radius: 2px;
     -moz-border-radius: 2px;
     border-radius: 24px;
-    background-color: #00d6ff;
+    background-color: #008297;
     color: white;
     text-align: center;
     padding-top: 8px;