it is literally working

modules/events-mod/src/main/typescript/schema/events-schema.ts

@@ -11,6 +11,13 @@ interface FactorioEvent<T extends FactorioObjectData> {
     tick: uint;
 }
 
+interface Colour {
+    alpha: float;
+    blue: float;
+    green: float;
+    red: float;
+}
+
 interface PositionData {
     x: double;
     y: double;
@@ -19,6 +26,9 @@ interface PositionData {
 interface PlayerData extends FactorioObjectData {
     associated_characters_unit_numbers: uint[];
     character_unit_number: uint | null;
+    chat_colour: Colour;
+    colour: Colour;
+    last_online: uint;
     name: string;
     object_name: string;
     position: PositionData;

modules/events-mod/src/main/typescript/serdes/serdes.ts

@@ -10,6 +10,9 @@ export namespace Serdes {
       character_unit_number: player.character?.unit_number ?? null,
       associated_characters_unit_numbers: charIds,
       position: positionTableToTable(player.position),
+      colour: mapColour(player.color),
+      chat_colour: mapColour(player.chat_color),
+      last_online: player.last_online
     }
   }
 
@@ -62,4 +65,14 @@ export namespace Serdes {
     }
   }
 
+  export function mapColour(color: Color): Colour {
+    color = (color as ColorTable)
+    return {
+      red: color.r ?? 0,
+      green: color.g ?? 0,
+      blue: color.b ?? 0,
+      alpha: color.a ?? 0,
+    }
+  }
+
 }