diff --git a/modules/search/instant-search/components/overlay.scss b/modules/search/instant-search/components/overlay.scss
index 5f3189843e166..3e50ade106506 100644
--- a/modules/search/instant-search/components/overlay.scss
+++ b/modules/search/instant-search/components/overlay.scss
@@ -6,7 +6,6 @@
 	opacity: 0.975;
 	transition: opacity 0.5s linear, 0.25s transform ease-in-out;
 	position: fixed;
-	background: white;
 	padding: 3em 1em;
 	overflow-y: auto;
 	overflow-x: hidden;
@@ -15,6 +14,14 @@
 	&.is-hidden {
 		transform: translateX( 100vw );
 	}
+
+	&.jetpack-instant-search__overlay--light {
+		background: #fff;
+	}
+
+	&.jetpack-instant-search__overlay--dark {
+		background: #131313;
+	}
 }
 
 .jetpack-instant-search__overlay-close {
diff --git a/modules/search/instant-search/components/search-results.scss b/modules/search/instant-search/components/search-results.scss
index 6ac295fe4ef25..fb062fe411e7e 100644
--- a/modules/search/instant-search/components/search-results.scss
+++ b/modules/search/instant-search/components/search-results.scss
@@ -7,11 +7,26 @@
 	display: flex;
 
 	mark {
-		background-color: #ffc;
 		font-weight: bold;
 		color: inherit;
 		padding: 0;
 	}
+
+	.jetpack-instant-search__overlay--light & {
+		color: inherit;
+
+		mark {
+			background-color: #ffc;
+		}
+	}
+
+	.jetpack-instant-search__overlay--dark & {
+		color: #fff;
+
+		mark {
+			background-color: #324E85;
+		}
+	}
 }
 
 .jetpack-instant-search__search-results-primary {