it is done

core/src/mindustry/content/Liquids.java

@@ -0,0 +1,41 @@
+package mindustry.content;
+
+import arc.graphics.Color;
+import mindustry.ctype.ContentList;
+import mindustry.type.Liquid;
+
+public class Liquids implements ContentList{
+    public static Liquid water, slag, oil, cryofluid;
+
+    @Override
+    public void load(){
+
+        water = new Liquid("water", Color.valueOf("596ab8")){{
+            heatCapacity = 0.4f;
+            effect = StatusEffects.wet;
+        }};
+
+        slag = new Liquid("slag", Color.valueOf("ffa166")){{
+            temperature = 1f;
+            viscosity = 0.8f;
+            effect = StatusEffects.melting;
+            lightColor = Color.valueOf("f0511d").a(0.4f);
+        }};
+
+        oil = new Liquid("oil", Color.valueOf("313131")){{
+            viscosity = 0.7f;
+            flammability = 1.2f;
+            explosiveness = 1.2f;
+            heatCapacity = 0.7f;
+            barColor = Color.valueOf("6b675f");
+            effect = StatusEffects.tarred;
+        }};
+
+        cryofluid = new Liquid("cryofluid", Color.valueOf("6ecdec")){{
+            heatCapacity = 0.9f;
+            temperature = 0.25f;
+            effect = StatusEffects.freezing;
+            lightColor = Color.valueOf("0097f5").a(0.2f);
+        }};
+    }
+}