diffc.ps1

function diffc(
    [Parameter(Mandatory)]
    [string]
    $FileA,
    [Parameter(Mandatory)]
    [string]
    $FileB
) {
    Write-Host "--- $(Convert-Path $FileA)"
    Write-Host "+++ $(Convert-Path $FileB)"
    Write-Host

    Compare-Object (Get-Content $FileA) (Get-Content $FileB) |
    ForEach-Object {
        $line = ""
        $foreColor = ""
        if ($_.SideIndicator -eq "=>") {
            $line = "+ " + $_.InputObject
            $foreColor = "Green"
        }
        elseif ($_.SideIndicator -eq "<=") {
            $line = "- " + $_.InputObject
            $foreColor = "Red"
        }

        Write-Host $line -ForegroundColor $foreColor
    }
}