diff --git a/tests/test_constants.py b/tests/test_constants.py
new file mode 100644
index 0000000..60a15cf
--- /dev/null
+++ b/tests/test_constants.py
@@ -0,0 +1,15 @@
+from toot.tui.constants import PALETTE, MONO_PALETTE
+
+
+def test_palette():
+    # for every entry in PALETTE, there must be
+    # a corresponding entry in MONO_PALETTE
+    for pal in PALETTE:
+        matches = [item for item in MONO_PALETTE if item[0] == pal[0]]
+        assert len(matches) > 0, f"{pal}, present in PALETTE, missing from MONO_PALETTE"
+
+    # for every entry in MONO_PALETTE, there must be
+    # a corresponding entry in PALETTE
+    for pal in MONO_PALETTE:
+        matches = [item for item in PALETTE if item[0] == pal[0]]
+        assert len(matches) > 0, f"{pal}, present in MONO_PALETTE, missing from PALETTE"
diff --git a/toot/tui/constants.py b/toot/tui/constants.py
index 285fcf7..e672947 100644
--- a/toot/tui/constants.py
+++ b/toot/tui/constants.py
@@ -75,7 +75,6 @@ MONO_PALETTE = [
     ('warning', 'white,bold', 'black'),
 
     # Functional
-    ('account', 'dark green', ''),
     ('hashtag_followed', 'white,bold', ''),
     ('hashtag', 'white,bold', ''),
     ('link', ',italics', ''),