diff --git a/src/functional_tests/test_room_tray.py b/src/functional_tests/test_room_tray.py
index c16b6d8..2896006 100644
--- a/src/functional_tests/test_room_tray.py
+++ b/src/functional_tests/test_room_tray.py
@@ -1,3 +1,4 @@
+from django.test import tag
 from selenium.webdriver.common.by import By
 
 from .base import FunctionalTest
@@ -204,6 +205,7 @@ class TrayTest(FunctionalTest):
     # Test T6 — landscape: tray btn is near the top edge of the viewport #
     # ------------------------------------------------------------------ #
 
+    @tag('two-browser')
     def test_tray_btn_anchored_near_top_in_landscape(self):
         room = self._make_sig_select_room()
         self._switch_to_landscape()
@@ -225,6 +227,7 @@ class TrayTest(FunctionalTest):
     # Test T7 — landscape: dragging btn downward opens the tray          #
     # ------------------------------------------------------------------ #
 
+    @tag('two-browser')
     def test_dragging_tray_btn_down_opens_tray_in_landscape(self):
         room = self._make_sig_select_room()
         self._switch_to_landscape()
@@ -281,6 +284,7 @@ class TrayTest(FunctionalTest):
     # Test T9 — landscape: 8 columns × 1 row of square cells             #
     # ------------------------------------------------------------------ #
     # T9a — column/row count (structure)
+    @tag('two-browser')
     def test_tray_grid_is_8_columns_by_1_row_in_landscape(self):
         room = self._make_sig_select_room()
         self._switch_to_landscape()
@@ -315,6 +319,7 @@ class TrayTest(FunctionalTest):
     # Test T9b — landscape: all 8 cells visible within the tray interior #
     # ------------------------------------------------------------------ #
 
+    @tag('two-browser')
     def test_landscape_tray_all_8_cells_visible(self):
         room = self._make_sig_select_room()
         self._switch_to_landscape()
diff --git a/src/static_src/scss/_tray.scss b/src/static_src/scss/_tray.scss
index 74315db..30b0ef0 100644
--- a/src/static_src/scss/_tray.scss
+++ b/src/static_src/scss/_tray.scss
@@ -270,7 +270,8 @@ $handle-r:         1rem;
     // In landscape the first row sits at the bottom; border-top divides it from
     // the felt above. border-bottom would face the wall — swap it out.
     .tray-cell {
-        border-top:    2px dotted rgba(var(--quaUser), 0.35);
+        border-color: rgba(var(--priUser), 0.35);
+        border-top:    2px dotted rgba(var(--priUser), 0.35);
         border-bottom: none;
     }