Coloring output - powershell

Question

I made a very very simple code that just checks a few regkeys. However to make it more nice to the eyes I was hoping that whenever it's False i can make it red and whenever it's True i can make it green.
I googled a bunch about this but couldn't find a clear solution for what i'm trying to accomplish. Any tips are very much appreciated.
Write-Host "Update Pending" -ForegroundColor Cyan
Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending'
""
Write-Host "Reboot Pending:" -ForegroundColor Cyan
Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending'
""
Write-Host "Reboot Required:" -ForegroundColor Cyan
Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired'
""
Write-Host "Pending File Rename Operations:" -ForegroundColor Cyan
Test-Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations'
""
Write-Host "Beschikbare Updates:" -ForegroundColor Cyan
Test-Path 'HKLM:\SOFTWARE\Microsoft\Updates\UpdateExeVolatile'

Answer 1

Save the output from Test-Path to a variable, the use the value to specify one color or the other to pass as an argument to Write-Host:
Write-Host "Update Pending" -ForegroundColor Cyan
$testResult = Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending'
Write-Host $testResult -ForegroundColor #('Red', 'Green')[$testResult]
Write-Host ''
PowerShell will implicitly convert $False to 0 and $True to 1 when used in an array indexer, so $False results in 'Red' being picked.
Since you're basically repeating the same test operation every time, you can simplify your code by organizing the labels and registry keys into a hashtable and then only write the code to test and output once:
$testCases = [ordered]#{
"Update Pending" = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending'
"Reboot Pending" = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending'
"Reboot Required" = 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired'
"Pending File Rename Operations" = 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations'
"Beschikbare Updates" = 'HKLM:\SOFTWARE\Microsoft\Updates\UpdateExeVolatile'
}
foreach($label in $testCases.psbase.Keys){
Write-Host "${label}:" -ForegroundColor Cyan
$testResult = Test-Path $testCases[$label]
Write-Host $testResult -ForegroundColor #('Red','Green')[$testResult]
Write-Host ''
}