Update README.md

README.md

@@ -1,5 +1,7 @@
 # Azure theme for ttk
 
+### *It's a png-based theme, so like other third-party themes, it's relatively slow*
+
 ![image](https://github.com/rdbende/Azure-ttk-theme/blob/main/azure/screenshot.png)
 
 ![image](https://github.com/rdbende/Azure-ttk-theme/blob/main/azure%20dark/screenshot.png)
@@ -35,4 +37,4 @@ switch = ttk.Checkbutton(root, text='Switch', style='Switch', variable=var, onva
 - Colors: **blue** `#007fff` `#3398ff` and **gray** `#e6e6e6` `#cccccc` `#737373` `#999999` `#333333`
 - This theme, unlike many other themes, uses the tk_setPalette procedure to set the background color of the window and the colors of other tkinter widgets.
 
-*It's a png-based theme, so like other third-party themes, it's relatively slow*
+