[Merge] lp:~ahayzen/webbrowser-app/browser-colour-update-001 into lp:webbrowser-app/staging

[Olivier Tilloy]

Review: Needs Fixing

This branch needs updating as it now has conflicts when merged into lp:webbrowser-app/staging.
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https://code.launchpad.net/~ahayzen/webbrowser-app/browser-colour-update-001/+merge/310173
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