[Accessibility][High Contrast] ToolStrip grip icon colour contrast is less than 4.5:1 in Normal Mode and HC Desert mode

[LeafShi1]

Minimal Reproduction Scenario

1. Create a WinForms Project.
2. Add a toolStrip to the project.
3. Test the text grip icon in toolStrip by using Accessibility Insight tools.

Current Behavior

The colour contrast is less than 4.5:1 in Normal Mode and HC Desert Mode

Normal mode

HC Aquatic

HC Desert

HC Dusk

HC Night Sky

Expected Behavior

The colour contrast is more than 4.5:1 in Normal Mode and all HC Mode

Test Environment

Microsoft Visual Studio Enterprise 2022 (64-bit) - main
Version 17.13.0 Preview 3.0 [35604.161.main]

Have you experienced this same issue with .NET Framework designer?

Yes

Have you experienced this same issue with previous previews of VisualStudio?

Yes, reproduce on VS 17.12

More Info

• This issue also reproduces on MenuStrip
• This issue also reproduces in runtime Dark Mode
  

[LeafShi1]

The original issue #6208

[Tanya-Solyanik]

@Epica3055 - if this issue is easily fixable by replacing the colors, please go ahead with the fix, if not, we'll wait for a customer report.

[Zheng-Li01]

Verified the issue on latest .NET SDK 10.0.100-alpha.1.25058.38 build that the issue has been fixed as below screenshot.

Only the issue still reproduces when setting the RenderMode as "System" on Normal mode. after confirmed that the current behavior is expected due to cannot do any changes with the System mode for now.

 Win11 Results:

Win10 Results: