$Output = "$Home\Desktop\Colors.txt"
# ------------------------------------------------------------------------------------------------------------
$Code = @'
    [DllImport("user32.dll", CharSet=CharSet.Auto, ExactSpelling=true)] 
    public static extern short GetAsyncKeyState(int virtualKeyCode); 
'@
Add-Type -MemberDefinition $Code -Name Keys -Namespace Capture
Add-Type -As System.Windows.Forms
[console]::CursorVisible = $false

$Pix = New-Object System.Drawing.Bitmap 1,1
$*** = [system.drawing.graphics]::FromImage($Pix)
$Empty = [System.Drawing.Point]::Empty
$Conf = @{}
# ------------------------------------------------------------------------------------------------------------
function Get-CButton {
  do {
    $pressed = [bool]([Capture.Keys]::GetAsyncKeyState(67) -eq -32767)
    if ([bool]([Capture.Keys]::GetAsyncKeyState(27) -eq -32767)) {Return 1}
    }
  until ($pressed -or $stop)
  Return 0
  }
# ------------------------------------------------------------------------------------------------------------
write-host "`nOutput: '$Output'`n" 
write-host -f yellow "---  Capture Colors with [C]-Button ; [Esc]-Button to end capturing   ---`n"
do {
  $val = Get-CButton
  if (!$val) {
    $***.CopyFromScreen([system.windows.forms.cursor]::position,$Empty,'1,1')
    [string[]]$Colors += [system.drawing.colortranslator]::ToHtml($Pix.GetPixel(0,0))
    write-host -f 'gray' $Colors[-1]
    }
  }
until ($Val)
# ------------------------------------------------------------------------------------------------------------
$Colors | Out-File $Output