increase contrast a bit, autoplay when skippping

src/routes/streams/[stream_id]/Player.svelte

@@ -9,6 +9,7 @@
 
 	export function jumpToTrack(s) {
 		getAudio().currentTime = s;
+		getAudio().play();
 	}
 </script>
 
@@ -32,7 +33,7 @@
 	export let iconColor = 'gray';
 	export let textColor = 'gray';
 	export let barPrimaryColor = 'lightblue';
-	export let barSecondaryColor = 'lightgray';
+	export let barSecondaryColor = '#6f6f6f';
 	export let backgroundColor = 'white';
 	export let display = false;
 	export let inlineTooltip = false;