make the player time indicator more visible

src/Timeline.jsx

@@ -150,7 +150,7 @@ const Timeline = memo(({
             style={{ height: timelineHeight, width: `${zoom * 100}%`, position: 'relative', backgroundColor: timelineBackground }}
             ref={timelineWrapperRef}
           >
-            {currentTimePos !== undefined && <motion.div transition={{ type: 'spring', damping: 70, stiffness: 800 }} animate={{ left: currentTimePos }} style={{ position: 'absolute', bottom: 0, top: 0, zIndex: 3, backgroundColor: 'black', width: currentTimeWidth, pointerEvents: 'none' }} />}
+            {currentTimePos !== undefined && <motion.div transition={{ type: 'spring', damping: 70, stiffness: 800 }} animate={{ left: currentTimePos }} style={{ position: 'absolute', bottom: 0, top: 0, zIndex: 3, backgroundColor: 'rgba(255,255,255,0.6)', width: currentTimeWidth, pointerEvents: 'none' }} />}
             {commandedTimePos !== undefined && <div style={{ left: commandedTimePos, position: 'absolute', bottom: 0, top: 0, zIndex: 4, backgroundColor: 'white', width: currentTimeWidth, pointerEvents: 'none' }} />}
 
             {apparentCutSegments.map((seg, i) => {