SAPIEN Technologies

No, not yet. Microsoft dragged their feet releasing a functioning SDK for PowerShell Core.
There is no specified date at this time. As PowerShell 7 will become a mainstream Windows component again, it will make things 'easier'.

Seems like you can use another .NET type for a conversion:
if($label1.BackColor.IsNamedColor -eq $false) {
$BackColor = $label1.BackColor.Name
$BackColor = [System.Drawing.ColorTranslator]::FromHtml('#'+$BackColor)
}

Or at least that's what Google said

All UI controls with color settings use the type [System.Drawing.Color]. I use a label here, but it doesn't really matter. if($label1.BackColor.IsNamedColor -eq $true){ $ColorName = $label1.BackColor.Name } else { $label1.BackColor = 'green' $ColorName = $label1.BackColor.Name } [System.Windows.Form...

$PSScriptRoot and $PSCommandPath are filled where possible as a convenience to users. You must keep in mind though that packaged code does not run as a script. It is executed as code in a custom host. So there are some differences to keep in mind and PowerShell is likely getting confused as to the s...

It really depends on what you are doing. In a nutshell: Windows is a generic Windows app and all output (e.g. Write-Host) is directed to a message box. Windows Forms eats all generic powershell output from Write-host, write-output, out-* etc. All output must be through form elements or message boxes...

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We sent a request regarding this constrained mode around. Since we have no encountered this before we suspected it is not in very wide use. Below is the reply from Lee Holmes at Microsoft on this subject: It might be a good time to talk to your customer 😊 Anything but NoLanguage mode in an endpoint ...

[Moved by moderator]

Without knowing exactly what your code does, that is hard to diagnose.
I will move this to the general PowerShell section.
But since it seems to involve remoting, I would look into permission and firewall settings.