[Bug] Setting TextCell.DetailColor to Color.Default does not reset the color to the system default on iOS

[paya-cz]

Description

On iOS, if I set a TextCell.DetailColor to non-default value and then revert back by setting it to Color.Default, the resultant color is different (black) to when I start with a Color.Default in the first place (looks like gray with a tint of blue).

Steps to Reproduce

1. Create a new ListView with TextCells DetailColor initialized to Color.Default
2. Change DetailColor to Color.Red
3. Change DetailColor back to Color.Default

Expected Behavior

The resultant color should be the same as if the steps 2 and 3 were omitted.

Actual Behavior

The resultant color (black) is different to the initial color (gray).

Basic Information

• Version with issue: 4.5.0.617
• Last known good version: Unknown
• IDE: Visual Studio Community 2019 for Mac, Version 8.5.2 (build 13)
• Platform Target Frameworks:
  • iOS: 8.0
• Nuget Packages: Xamarin.Forms

Screenshots

Reproduction Link

cellcolors.zip

Workaround

None.