Closed Bug 1518810 Opened 5 years ago Closed 4 years ago

[Content Blocking] Blue label from Tracking list in "Show site information" is hardly visible on High Contrast mode


(Firefox :: Protections UI, defect, P3)




Tracking Status
firefox65 --- wontfix
firefox66 --- wontfix
firefox69 --- verified


(Reporter: david.olah, Assigned: gvelchuru)



(2 files)

Attached image Label_block.png

Windows 10, Windows 7
66.0a1 (2019-01-09)


  1. Set a high contrast theme (example: black).
  2. Open Firefox.
  3. Go to a website (ex:
  4. Open the "Show site information"
  5. Click the Trackers list to open

[Actual Result:]
Blue label with message <To block all trackers, set Content blocking to "Strict"> is hardly visible.

[Expected Result:]
Blue label with message <To block all trackers, set Content blocking to "Strict"> is clearly visible.

In the Attachments you can see the label marked.

Priority: -- → P3
Target Milestone: --- → Future

Gautham, are you interested to take this?

In order to debug this, besides setting your system to be in High Contrast mode, you need to use our devtools to debug the Firefox UI, which is fun!

On Nightly you can do that by opening devtools (for example by Ctrl+Shift+I/Cmd+Shift+I), pressing the "..." button, Settings, and making sure both "Enable browser chrome and add-on debugging toolboxes" and "Enable remote debugging" checkboxes are checked. Then you can open the Browser Toolbox by pressing Ctrl+Shift+Alt+I. This allows you to remote debug the browser UI using the same tools that you can use to debug web pages. Since this UI is inside a pop-up, from the "..." button in Browser Toolbox select "Disable Pop-up Auto-Hide" which makes sure pop-ups remain open on the window until explicitly closed. Then you can use the Inspector tool to examine what styles are applied to the blue control versus the controls around it and where the style properties are coming from. The most interesting style property you'd want to adjust is the color property. The fix to this bug is probably either overriding that property somewhere or removing an override that may be being used inappropriately to give us the dark blue text colour.

See bug 1518807 for a similar bug fix (bug in another part of the browser UI) to get some ideas.

I'd love to take this! Thank you for the information, I'll take a look.

Attachment #9072863 - Attachment description: Bug 1518810 - change color of show site information to black → Bug 1518810 - remove blue color of site information
Pushed by
remove blue color of site information r=dao
Assignee: nobody → gvelchuru
Closed: 4 years ago
Resolution: --- → FIXED
Flags: qe-verify+
Flags: needinfo?(ciprian.georgiu)

Verified as fixed on Windows 10x64 and Windows 7x64 with 69.0b6.

Flags: qe-verify+
Flags: needinfo?(ciprian.georgiu)
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