Creating a theme involves defining a consistent and unified design and look and feel for the script. You can create a theme from the Themes window. 

To create a theme, complete the following steps:

1. On the Themes window, click the icon.
   
2. Specify a Name and Description for the theme.
3. Click the Design tab.
   The Design tab appears.
   
   
   
4. Choose a background color for the page by clicking the Background Color drop-down menu and selecting the desired background color. 
5. Change the appearance of the text by clicking the Color drop-down menu and selecting the text color.
6. Change the Font Size, Font Family, and Font Weight, as desired. 
7. Select the relevant options from the Buttons list to change the Buttons format.
   

8. Click Save.

   When you save the theme, the page is saved, and the History tab appears.  The History tab logs the theme page update history.