style: 预览页音符颜色

src/page-instrument/view-detail/index.module.less

@@ -254,6 +254,16 @@
                 stroke: #000000;
             }
         }
+        .voiceActive {
+            rect {
+                fill: #000000;
+                stroke: #000000;
+            }
+        }
+        .rectActive {
+            fill: #000000;
+            stroke: #000000;
+        }
     }
 }