Familiar PowerShell prompt (with Posh-Git)

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Here is the Windows PowerShell version of the Bash prompt I use:

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function prompt {
    $realLASTEXITCODE = $LASTEXITCODE

    # Reset color, which can be messed up by Enable-GitColors
    $Host.UI.RawUI.ForegroundColor = $GitPromptSettings.DefaultForegroundColor

    $currentPrincipal = New-Object Security.Principal.WindowsPrincipal( [Security.Principal.WindowsIdentity]::GetCurrent() )
    & {
        if ($currentPrincipal.IsInRole( [Security.Principal.WindowsBuiltInRole]::Administrator ))
        {
            Write-Host($env:username) -f red -nonewline
            Write-Host("@") -f red -nonewline
            Write-Host($env:computername) -f red -nonewline
            Write-Host(":") -nonewline
            Write-Host($pwd.ProviderPath) -f blue -nonewline

            Write-VcsStatus

            Write-Host('#') -nonewline
        } else {
            Write-Host($env:username) -f green -nonewline
            Write-Host("@") -f green -nonewline
            Write-Host($env:computername) -f green -nonewline
            Write-Host(":") -nonewline
            Write-Host($pwd.ProviderPath) -f blue -nonewline

            Write-VcsStatus

            Write-Host('$') -nonewline
        }
    }

    $global:LASTEXITCODE = $realLASTEXITCODE
    return " "
}