The Quake Live workshop item ExtraQL used to be able to change your Steam name for you via the Steam API, letting you add colour codes ( eg ^4 for blue ) that the game understood for display in-game only while the game was running, that way your name in other games using your Steam name was left unaffected and it was far more convenient than manually changing it every time you played Quake. This has been useful for players for around ten years.

There are other games that use Steam names and colour codes as well, for example: Call of Duty: Modern Warfare 2

The Steam API name change stopped working a few days ago apparently due to undocumented API changes, can we get it back or an alternative method that can be automated?

I'm sorry I couldn't find a better place to post a Steam API issue, I have checked this is a problem in both the current Beta Steam client and the current non-beta version also.