Jumbotron overlay is now optional.

Just add the jumbotron-overlay class, or jumbotron-overlay-gradient

src/styles/components/_jumbotron.sass

@@ -7,22 +7,35 @@
 	margin-bottom: 0
 	padding-top: 10em
 	padding-bottom: 10em
+	position: relative
+
+	&:after
+		background-color: rgba(black, .6)
+		bottom: 0
+		content: ''
+		display: none
+		left: 0
+		position: absolute
+		right: 0
+		top: 0
+		visibility: hidden
 
 	// Black-transparent gradient from left to right to better read the overlay text.
 	&.jumbotron-overlay
-		position: relative
-
-		&:after
-			background-image: linear-gradient(45deg, rgba(black, .5) 25%, transparent 50%)
-			bottom: 0
-			content: ''
-			left: 0
-			position: absolute
-			right: 0
-			top: 0
-
 		*
 			z-index: 1
+		&:after
+			display: block
+			visibility: visible
+
+	&.jumbotron-overlay-gradient
+		*
+			z-index: 1
+		&:after
+			background-color: transparent
+			background-image: linear-gradient(45deg, rgba(black, .5) 25%, transparent 50%)
+			display: block
+			visibility: visible
 
 		h2, p
 			text-shadow: 1px 1px rgba(black, .2), 1px 1px 25px rgba(black, .5)