diff --git a/config/waybar-style.css b/config/waybar-style.css
index 499b5e5..b78b812 100644
--- a/config/waybar-style.css
+++ b/config/waybar-style.css
@@ -13,14 +13,16 @@
 
 /* Dark popover background for the ocd tooltip window.
    Waybar scopes tooltip styles globally: this rule applies to every
-   tooltip in the bar, not just ours (Waybar wiki / PR #4930). It uses
-   @background / @foreground, the same dark theme color the rest of
-   the bar already uses (imported by omarchy's theme file), so the
-   change matches the bar instead of introducing a new color.
+   tooltip in the bar, not just ours (Waybar wiki / PR #4930).
+   Literal hex, not @background: the omarchy matte-black theme file
+   (~/.config/omarchy/current/theme/waybar.css) is empty, so @background
+   / @foreground are undefined GTK variables and a reference here would
+   render transparent. #121212 / #bebebe are the matte-black colors.toml
+   values, so the popover still matches the intended theme.
    Also make the tooltip font monospace so the block-char bars line up. */
 tooltip {
-  background-color: @background;
-  color: @foreground;
+  background-color: #121212;
+  color: #bebebe;
   padding: 6px 8px;
   border-radius: 6px;
   font-family: monospace;