Improve title bar control button visibility

[Anushka-chaurasia-prog]

Summary

Improved the visibility of the title bar window control buttons by increasing the opacity of symbolColor in the title bar overlay configuration.

Changes Made

• Updated symbolColor opacity from 0.64 to 0.9
• Applied to both dark and light modes

Issue

The minimize, maximize, and close buttons were difficult to see against certain default theme backgrounds due to low contrast/opacity.

Change Impact: 🟢 Low

Regression Risk: Minimal. This is a purely visual change affecting window control button opacity in the title bar. The modification is isolated to a private method in a single file, involves only a constant value change (0.64 to 0.9), and has no behavioral or logical implications. No shared dependencies, core logic, or critical paths are affected.

QA Recommendation: Manual visual regression testing is recommended to verify that the window control buttons (minimize, maximize, close) are clearly visible and properly styled with the increased opacity in both dark and light theme modes. Automated testing coverage is low value given the trivial nature of the change.

Generated by CodeRabbitAI

[mm-cloud-bot]

@Anushka-chaurasia-prog: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

Details

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[mattermost-build]

Hello @Anushka-chaurasia-prog,

Thanks for your pull request! A Core Committer will review your pull request soon. For code contributions, you can learn more about the review process here.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 57a747aa-53df-4262-93af-7d46ae03ef67

📥 Commits

Reviewing files that changed from the base of the PR and between adfcd2c and 4606177.

📒 Files selected for processing (1)

• src/app/windows/baseWindow.ts

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📝 Walkthrough

Walkthrough

The title bar overlay symbol color opacity is increased from 0.64 to 0.9 in the getTitleBarOverlay() method to improve visibility, maintaining separate RGB values for dark and light mode selection.

Changes

Title bar overlay visibility

Layer / File(s)	Summary
Title bar overlay symbol opacity src/app/windows/baseWindow.ts	The getTitleBarOverlay() method increases the overlay symbolColor opacity from 0.64 to 0.9 for improved visibility in both dark and light modes.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly summarizes the main change: improving visibility of title bar control buttons by increasing symbol color opacity from 0.64 to 0.9.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[devinbinnie]

@Anushka-chaurasia-prog Thanks for the PR! Would you be open to posting a before and after screenshot for us so we can see what the change looks like? I'm going to ask our UX team to weigh in here and that would be easiest for them. Thanks!

[Anushka-chaurasia-prog]

Thanks for reviewing the PR! I wasn’t able to fully run the desktop app locally due to Electron/Windows build dependency issues, but the change increases the symbolColor opacity for the title bar controls from 0.64 to 0.9 in both dark and light modes to improve visibility against the background themes. Based on the existing screenshots from the issue, the expected result is improved contrast and clearer visibility of the minimize, maximize, and close buttons across the default themes. If needed, I can also adjust the opacity further or try another approach based on UX feedback. Thanks!

…

On Tue, May 12, 2026 at 6:14 PM Devin Binnie ***@***.***> wrote: *devinbinnie* left a comment (mattermost/desktop#3819) <#3819 (comment)> @Anushka-chaurasia-prog <https://github.com/Anushka-chaurasia-prog> Thanks for the PR! Would you be open to posting a before and after screenshot for us so we can see what the change looks like? I'm going to ask our UX team to weigh in here and that would be easiest for them. Thanks! — Reply to this email directly, view it on GitHub <#3819 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BKTLO6B5WQNG3AKFC443YNL42MMB5AVCNFSM6AAAAACY2GHTGKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DIMZQGU4TQOJXGQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you were mentioned.Message ID: ***@***.***>