Change lightbox caption background to beige with grey text for readability

assets/sass/components/_poptrox-popup.scss

@@ -75,7 +75,7 @@
 
 		.caption {
 			@include padding(2em, 2em);
-			@include vendor('background-image', 'linear-gradient(to top, rgba(16,16,16,0.45) 25%, rgba(16,16,16,0) 100%)');
+			background: rgba(246, 240, 228, 0.95); /* freundliches Beige transparent */
 			bottom: 0;
 			cursor: default;
 			left: 0;
@@ -86,10 +86,11 @@
 
 			h2, h3, h4, h5, h6 {
 				margin: 0 0 (_size(element-margin) * 0.25) 0;
+				color: #4a4a4a !important; /* Grau */
 			}
 
-			p {
-				color: _palette(fg-bold);
+			p, span, i, strong, em {
+				color: #5c554e !important; /* Grau */
 			}
 		}