Created base class for fluids. Implemented all necessary fluids with nearly correct colors.

src/main/java/fluids/BasicFluid.java

@@ -0,0 +1,20 @@
+package fluids;
+
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.fluids.Fluid;
+
+public class BasicFluid extends Fluid {
+
+    private int color;
+
+    public BasicFluid(String fluidName, int color) {
+        super(fluidName, new ResourceLocation("tconstruct:blocks/fluids/molten_metal"), new ResourceLocation("tconstruct:blocks/fluids/molten_metal_flow"));
+        this.color = color;
+    }
+
+    @Override
+    public int getColor() {
+        return color;
+    }
+
+}