Thanks jarry
Explanation to other users.
Use the url in this thread to the theme builder.
Create your style in the Setting tab. For use in your project, select tab CSS and copy the style code.
- Under easyui/themes, create a new folder and name it what describe your theme "mytheme"
- Copy all files from default theme to this new folder
- Open easyui.css file and overwrite everything with the created CSS
Link to this new theme
<link rel="stylesheet" type="text/css" href="easyui/themes/mytheme/easyui.css">
Go to theme builder LESS tab and copy everything, and save it in a text file (Important)
When you need to edit in the theme, open theme builder, goto LESS tab, overwrite with your theme LESS code and push the little reload button on the LESS tab, and you are back.
Regards Jesper - Denmark