I'd propose a configuration option with choices:
Only in game
Just out of interest. Can you say what additional color functions are planed? Is it planned to show enemies and friends not only in red and blue but in different red/blue shades? Of course that would be a huge improvement for that mode!
You can see drafts of what the functionality may look like here https://github.com/FAForever/fa/pull/3650
This was due to a change to the game code on FAF Develop. A patch was made to add functionality to the team color mode but additional lua changes need to be made as well which will soon be released.
If they don't have steam installed or don't have it running it doesn't do anything. All this does is allow the built in steam in the game to record play time and allow the currently present steam integration in the game to work as if you launched it from steam.
New client can be found at https://github.com/FAForever/downlords-faf-client/releases/tag/v2022.6.0
Add steam play time integration https://github.com/FAForever/downlords-faf-client/pull/2725
Enables integration with the steam overlay and play time counter when steam is running when client is opened. This only applies when steam is running and you own Forged Alliance on Steam
Enable more sort options https://github.com/FAForever/downlords-faf-client/pull/2729
Adds more sort options to the vault searches