Memory Mangement Powershell Script

I need a script to do the following:


•      List any processes running on a machine over 100 meg of ram but under 200 meg
o      Show the name of process
o      Colour them orange
o      Using a for or foreach loop
•      List any processes running on your machine over 200 meg
o      Show the name of the process, company, product and path
o      Colour these red
o      Using the “where” pipeline command
•      Display a set of totals after displaying these two lists
o      Total processes running
o      Total “orange” processes
o      Total “red” processes

I know I need to use the get-process cmdlet like so:

$a = Get-Process | Where-Object {$_.WS -gt 100000000} | where-object {$_.WS -lt 200000000} | sort-object ProcessName | format-table -property ProcessName

and bang them into an array as well as format them with write-output, but I'm not sure how!