try something

ReallifeGamemode.Client/Login/main.ts

@@ -66,4 +66,13 @@ export default function (globalData: IGlobalData): void {
         loginCam.setActive(false);
         mp.game.cam.renderScriptCams(false, false, 0, true, false);
     });
+
+    mp.events.add('SetNametagColor',(faction: string) => {
+
+        mp.nametags.set({
+            color: [73, 137, 0, 255],         
+        });
+        
+
+    });
 }

ReallifeGamemode.Client/util/Gangwar.ts

@@ -261,9 +261,9 @@
                 self.attacker = null;
                 //self.blip.setFlashes(false);
                 mp.game.invoke(Natives.SET_BLIP_FLASHES, self.blip, false);
-
-                //self.setColor(self.owner)
-                //self.blip.setColour(self.color)
+                self.blip.destroy();
+                self.setColor(self.owner);
+                self.blip.setColour(self.color);
                 mp.game.invoke(Natives.SET_BLIP_COLOUR, self.blip, self.color);
                 self.setLeaderColShape();
                 return;

ReallifeGamemode.Server/Events/Login.cs

@@ -63,6 +63,7 @@ namespace ReallifeGamemode.Server.Events
             player.SetData("duty", false);
             player.SetData("Adminduty", false);
             player.TriggerEvent("SERVER:SET_HANDMONEY", user.Handmoney, 0);
+            player.TriggerEvent("SetNametagColor");
             Gangwar.Gangwar.loadPlayer(player);
             if (user.FactionLeader)
             {