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Welcome to Thunderbird Add-ons.
Add extra features and styles to make Thunderbird your own.
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ThatDataPurple 2026.10.0
ruma That Data Person
A purple theme for Thunderbird in the That Data Person brand colours, by That Data Person Limited.
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ThatDataPurple follows the 2026 That Data Person branding: a deep brand-dark (#0D0629) background, brand purple (#4320CC) for the toolbar, selected tab and status bar, and light purple for focus and accents. Also themes the folder pane, message list and reading pane.
