To automatically set colors to groups of planes in tacview, you can use this powershell script.

To enable running powershell scripts on your Windows computer, open Powershell in administrator mode
(find powershell in the windows start menu, hold shift, right-click the shortcut and select 'run as administrator')

type the command: Set-ExecutionPolicy -ExecutionPolicy Bypass
This will ensure you can run powershell scripts.

Next, edit convert.bat with notepad and change <YOUR NAME> to your windows username, or completely change the path to whatever you want.

any tacview you want to convert, do as follows:
- copy tacview into your target folder
- rename to in.acmi
- run convert.bat
- press any key to complete
- double click output.zip.acmi to view the colored tacview