Looks like Switch widget still needs deprecated accentColor to be defined in ThemeData in order to not use the default color on Android. In my project I defined a whole ColorScheme to not use deprecated color values in ThemeData and saw that Switch ignores secondary defined in the app theme. I can only change color by adding accentColor property.

Attached a sample project with fully defined ColorScheme and Switch not following it.

This is how Switch looks with just ColorScheme defined:

This is how Switch should look like and how it looks when I add accentColor to ThemeData:

Steps to Reproduce

Create new project
Define full ColorScheme (with all defined colors)
Add Switch widget and observe that it has the default Material blue color on Android.

Expected results: Switch follows secondary color as it is suggested in deprecation message for accentColor

Actual results: Switch has default Material blue color on Android

Code sample

bug.zip

flutter doctor output

// Attaching only Flutter related info, since other is irrelevant for the issue
[✓] Flutter (Channel stable, 2.5.3, on macOS 11.6.1 20G224 darwin-x64, locale en-UA)
    • Flutter version 2.5.3 at /Users/vb/Development/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 18116933e7 (5 weeks ago), 2021-10-15 10:46:35 -0700
    • Engine revision d3ea636dc5
    • Dart version 2.14.4