microsoft/microsoft-ui-xaml

Fallback value should be close to original value

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#5,707 opened on Aug 17, 2021

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 (1 comment) (0 reactions) (0 assignees)C# (5,815 stars) (659 forks)batch import
area-Materialsbughelp wantedteam-Controls

Description

Describe the bug fallback value for "SystemControlBaseHighAcrylicElementBrush" is "SystemBaseHighColor" which has a completely opposite contrast as the acrylic color (white in acrylic as compared to black in solid color)

Steps to reproduce the bug Use "SystemControlBaseHighAcrylicElementBrush" as background color and have text on top of it and set to battery saver.

Expected behavior The text should be visible and readable

Screenshots image - without battery saver image

  • with battery saver

All devices

Contributor guide

Tech stack
csharp
Domain
frontendaccessibility
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
WinUI XAMLresource dictionaries
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
The issue is about the fallback value for SystemControlBaseHighAcrylicElementBrush used in battery saver mode. To fix, locate the brush resource definition in the WinUI resource dictionary files (e.g., generic.xaml or theme resources). The fallback value should be changed to a color that provides sufficient contrast against the acrylic background. Check the existing comment thread for any maintainer suggestions. Ensure the new fallback color matches the contrast guidelines for accessibility.