If you would like to remove one of your themes, follow the steps outlined below:
From the main menu click on Marketing » Colors & Styles.
Click on the Create & Customize Your Themes Here link.
On the upper left corner of the theme editor, select the theme that you would like to delete.
Click the icon with three lines and select Delete Theme.
Confirm this by clicking the Delete button when prompted.
Note: All galleries using this theme will switch to your default theme. If you delete your default theme, your default theme will become the Instaproofs Classic theme.