fix: borders not showing up in dark mode

Signed-off-by: Graham White <[email protected]>

src/themes/carbon.py

@@ -71,7 +71,7 @@ carbon_theme = gr.themes.Base(
     border_color_accent="*neutral_100",
     border_color_accent_dark="*neutral_800",
     border_color_primary="*neutral_300",
-    border_color_primary_dark="*neutral_800",
+    border_color_primary_dark="*neutral_700",
     # Chatbubble related colors
     # light
     # color_accent = "*secondary_400",