doc: enhance documentation on `border.color`

diff --git a/docs/labwc-theme.5.scd b/docs/labwc-theme.5.scd
index 8a73e8c3cc665741dd7a045bda8dc919739e96d0..bc6e11d7f00284316d9be4b69121399e7e528bf4 100644 (file)
--- a/docs/labwc-theme.5.scd
+++ b/docs/labwc-theme.5.scd
@@ -196,8 +196,9 @@ elements are not listed here, but are supported.
        boxes. Default is 20.
 
 *border.color*
-       Set all border colors. This is obsolete, but supported for backward
-       compatibility as some themes still contain it.
+       Set both *window.active.border.color* and *window.inactive.border.color*.
+       This is obsolete, but supported for backward compatibility as some themes
+       still contain it.
 
 # BUTTONS