Fix bug: Drag grip appears black while dragging

style.sass

@@ -35,8 +35,6 @@ input
 
 		& > h3
 			color: var(--color-strong)
-		& > .tile
-			background-color: var(--color-weak)
 		& > .add-tile
 			background-color: var(--color-strong)
 
@@ -56,6 +54,7 @@ input
 	align-items: center
 	margin-bottom: 15px
 	border: none
+	background-color: var(--color-weak)
 
 	svg.drag-gripper
 		color: var(--color-strong)
@@ -111,16 +110,20 @@ input
 	position: absolute
 
 	&.hovering-1 > .tile
-		background-color: #e5eed4
+		--color-weak: #e5eed4
+		--color-strong: #c0d694
 
 	&.hovering-2 > .tile
-		background-color: #d3f3f2
+		--color-weak: #d3f3f2
+		--color-strong: #6ed8d6
 
 	&.hovering-3 > .tile
-		background-color: #eddef3
+		--color-weak: #eddef3
+		--color-strong: #d3aee1
 
 	&.hovering-4 > .tile
-		background-color: #f9e5db
+		--color-weak: #f9e5db
+		--color-strong: #eeab87
 
 	& > .tile
 		position: relative