You can modify the login page of Portfolio Web to incorporate your own image, an optional link, and a custom background color.
Click Global Settings, then click Web Client Customization.
Select Customized Login Screen.
To add a custom image to the top left of the login screen, click Choose File and select the image.
To have the image link to a website when clicked, enter the URL to link to.
Enter the title to be displayed in the browser’s title bar or tab.
Click the color swatch to choose a background color for the login window.
Other colors in the window will be automatically adjusted to complement the background.
Click Apply to save the changes.