RocketChat / RocketChat/Rocket.Chat

[Improve] Implement Live Preview for theme selection in Accessibility & Appearance Settings

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#39,826 2 comments 0 reactions 0 assignees View on GitHub

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type: feature
Dominant language
TypeScript
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Avg merge
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Merged PRs (30d)
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Description

The current theme selection workflow in Accessibility & Appearance settings lacks real-time feedback.
Currently, when a user selects a theme (Light, Dark, High Contrast, or Match System), the change is not visible until the user clicks "Save Changes." This creates a BLIND selection process that forces users into a trial-and-error loop, significantly increasing the interaction cost.
This behavior deviates from modern design patterns found in major platforms (e.g., GitHub, Slack), where visual changes are reflected instantly to allow for immediate validation.

https://github.com/user-attachments/assets/1adc5ec1-6e5d-4630-90e6-690820b0ab6b

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start from the Accessibility & Appearance settings entry point and reproduce the current theme-selection workflow for Light, Dark, High Contrast, and Match System. Done means each selection provides immediate visual feedback before saving, while the existing Save Changes workflow continues to work.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
accessibility, frontend
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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