You can customize the buttons.
Prerequisite
You have created your own modification set.
You have the Portal administrator function privilege.
Procedure
Click Application launcher >
Administration. The Administration opens with the
Configuration view.
Click Portal > Manage configuration sets. All available configuration and modification sets are displayed. You can edit the modification sets.
Click Edit in the row of the relevant modification set.
Click User interface.
Click Show advanced settings.
In the Buttons (for example, Save or Cancel) section, customize the button colors and shapes.
You have changed the button colors and shapes.
Example
Default buttons:
Customized buttons: