using hover color not variable of gray

packages/app/src/styles/theme/_apply-colors-dark.scss

@@ -258,7 +258,7 @@ ul.pagination {
   // Pagetree
   .grw-pagetree {
     .grw-pagetree-is-over {
-      background: $gray-900;
+      background: $bgcolor-list-hover;
     }
     .grw-pagetree-item {
       &.grw-pagetree-is-target {

packages/app/src/styles/theme/_apply-colors-light.scss

@@ -171,7 +171,7 @@ $border-color: $border-color-global;
   // Pagetree
   .grw-pagetree {
     .grw-pagetree-is-over {
-      background: $gray-200;
+      background: $bgcolor-list-hover;
     }
     .grw-pagetree-item {
       &.grw-pagetree-is-target {