Imported Editor Theme Profiles persist after deletion

Steps:

• Download editor theme profile (e.g. URL: https://netbeansthemes.com/)
• Import selected theme into IDE via Options -> Fonts and Colors -> Import
• Restart IDE
• Return to Options -> Fonts and Colors and delete imported theme
• Restart IDE
• Return to Options -> Fonts and Colors and select "profile" drop down list
• Imported color theme name persists and when selected has no defined attributes/properties falling back to editor default values

Unable to locate theme profile name in settings or IDE files to manually delete.