Powershell random color change

Never used Powershell before and im trying to recreate the following Bash script in powershell:

while true; do head -c200 /dev/urandom | od -An -w50 -x | grep -E --color "([[:alpha:]][[:digit:]]){2}"; sleep 0.5; done

Here's what i got, but i want it to turn random lines into red, rather than every five instances;

while(Get-Random)
{
    Start-Sleep -Milliseconds 10
    Write-Host -NoNewline "   " (get-random) 
    Start-Sleep -Milliseconds 30    
    Write-Host -NoNewline "   " (get-random) 
    Start-Sleep -Milliseconds 10
    Write-Host -NoNewline "   " (get-random) 
    Start-Sleep -Milliseconds 30    
    Write-Host -NoNewline "   " (get-random) 
    Start-Sleep -Milliseconds 10
    Write-Host -NoNewline "   " (get-random) -ForegroundColor red
}

Any idea how i can go about setting "-ForegroundColor red" for random lines?