PowerShell Coloured output (stolen from someone somewhere)

Colour-output.ps1

function Format-AnsiColor {
    [CmdletBinding()]
    [OutputType([String])]
    param(
        [Parameter(
            Mandatory = $true,
            ValueFromPipeline = $true
        )]
        [AllowEmptyString()]
        [String]
        $Message,
        [Parameter(Mandatory=$True)]
        [ValidateSet(
             'black'
            ,'red'
            ,'green'
            ,'yellow'
            ,'blue'
            ,'magenta'
            ,'cyan'
            ,'white'
        )]
        [String]
        $ForegroundColor
    )

    Begin {
        $e = [char]27
        $fore = (Get-Variable "ForegroundColor").Attributes.ValidValues | % {$i=0} {@{$_=$i+30};$i++}
    }

    Process {
       "$e[$($fore.$ForegroundColor)m$Message"
    }
}

'One','Two','Three' | Format-AnsiColor -ForegroundColor red