fix: Use defface instead

README.md

@@ -31,14 +31,14 @@ Or you can bind it globally to replace `goto-line`:
 (global-set-key [remap goto-line] 'goto-line-preview)
 ```
 
-## Change hightlight color or duration
+### Change hightlight color or duration
 
 ```el
 ;; Highlight 1.5 seconds when change preview line
 (setq goto-line-preview-hl-duration 1.5)
 
 ;; Change highlight background color to white
-(setq goto-line-preview-hl-color "white")
+(set-face-background 'goto-line-preview-hl "white")
 ```
 
 If you want to close highlight, set `goto-line-preview-hl-duration` to 0 or `nil`.

goto-line-preview.el

@@ -53,10 +53,10 @@
   :group 'goto-line-preview
   :type 'integer)
 
-(defcustom goto-line-preview-hl-color "DimGray"
-  "Background color of highlight when change preview line."
-  :group 'goto-line-preview
-  :type 'string)
+(defface goto-line-preview-hl
+  '((t :inherit highlight))
+  "Face to use for highlighting when change preview line."
+  :group 'goto-line-preview)
 
 (defvar goto-line-preview--prev-window nil
   "Record down the previous window before we do preivew display.")
@@ -71,7 +71,7 @@
   "Keep highlight for a fixed time."
   (when goto-line-preview-hl-duration
     (let ((overlay (make-overlay (line-beginning-position) (line-end-position))))
-      (overlay-put overlay 'face `(:background ,goto-line-preview-hl-color))
+      (overlay-put overlay 'face 'goto-line-preview-hl)
       (sit-for goto-line-preview-hl-duration)
       (delete-overlay overlay))))