Lightcode Theme smoother color settings

```json
"workbench.colorCustomizations": {
        "panel.background": "#f6f0f0",
        "editor.background": "#f6f0f0",
        "terminal.background": "#f6f0f0",
        "sideBar.background": "#f6f0f0",
        "menu.background": "#f6f0f0"
    },
```