Zoho CRM Themes give individual users the option to customize the colors in their CRM account. Using the Themes feature, you can change the background color of tabs.
Please note that this customization is User specific, i.e. a theme changed by one user will not be reflected in another user's CRM accounts.
To change theme
- Go to Setup > General > Personal Settings.
- In Personal Settings page, you can choose any theme from the available list as per your requirements.