Note, if a Light or Dark Pane Background option is enabled, the applied light or dark color will in effect replace Thunderbird's default background color. It is possible to retain Thunderbird's default background color if White is selected as the background color.

After adding a new identity, the font and background colors must be defined in Options. In compose windows, the colors applied are based on the From identity. Applying colors based on the account in which the message was received is especially useful when using a Global Inbox for POP3 messages or when using Local Folders to store POP3 and/or IMAP messages. In the thread pane and message pane/tabs/windows, the colors applied are based either on the account in which the folder containing the message is located, or on the account in which the message was received. In each of the above bullet lists, the options are listed in decreasing priority order. Light Field Backgrounds (on hover or focus) Dark Field Backgrounds (on hover or focus).

Color Subject Background Color From Background Color To/Cc/Bcc Backgrounds Color Attachment Background Color Header Background.Black Header Labels White Header Labels, Black Field Fonts White Field Fonts.Color Subject Font Color From Font Color To/Cc/Bcc Fonts Color Attachment Font.Colors can be applied in the Compose Window using these options: Font Colors Black Header Labels White Header Labels.Colors can be applied in the Message Pane/Tabs/Windows using these options: Font Colors Light Pane Background Dark Pane Background.Color Subject Font Color From Font Color Recipient/Date/Size/Account/etc Fonts.Colors can be applied in the Thread Pane using these options: Font Colors Color Account Background Color Folder Background.Color Account Font Color Folder Font Color Unread/Total/Size Fonts.Colors can be applied in the Folder Pane using these options: Font Colors Font and Background Colors The font and background colors can be set for each account or identity. on the Thunderbird main menu, since this allows the coloring and styling changes to be seen while still in the Account Colors Options dialog. USER REFERENCE Accessing Account Colors Options The best way to access the Account Colors Options dialog is to select Tools | Account Colors Options. The colors and other settings can be changed in the Account Colors Options dialog. The colors for an account are the same as the colors for its default identity.

OVERVIEW Account Colors allows a font color and a background color to be associated with each POP3/IMAP account or identity. 'Reinstate default hover style (on From menu)' option for Compose Window.'Reinstate default hover and select styles' option for both Folder and Thread Panes.It is recommended to enable these options: In Thread Pane, tagged message font colors now override Account Colors account/identity font colors.Unfortunately, the work required to keep Account Colors in step with the continuing changes to Thunderbird is not sustainable. Support for legacy extensions was removed in Thunderbird 74beta and the future for Thunderbird extensions is focused around the new mailExtensions APIs. IMPORTANT NOTICE After 11 years, it is with regret that it has been decided to cease development and support of Account Colors.

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