How to give 'white text' warnings?

[CallMeDio]

Hey again, the title pretty much says it all, Im looking at the decompiler and xmls for hours and I can't find how to make an alert such as the one that happens when a colonist dies:
*blipsound* white text on top of screen: "guy x died".

[kaptain_kavern]

I don't know if it can help but for surgeries there is just a xml tag <successfullyRemovedHediffMessage>{0} has successfully excised {1}'s carcinoma.</successfullyRemovedHediffMessage> in Core/Defs/RecipeDefs/Recipes_Surgery.xml(line 85) per example.

[1000101]

From C# code you are looking for the Messages or the LetterStack classes.