- add: OldNeoInterface (#108)

* ebal

* setup gui

* AAAAAAAAAA EBLAN

Content.Client/UserInterface/Systems/Atmos/GasTank/GasTankWindow.cs

@@ -41,7 +41,7 @@ namespace Content.Client.UserInterface.Systems.Atmos.GasTank
             var back = new StyleBoxTexture
             {
                 Texture = panelTex,
-                Modulate = Color.FromHex("#141414"),
+                Modulate = Color.FromHex("#050505"),
             };
 
             back.SetPatchMargin(StyleBox.Margin.All, 10);