Joke Script to include in a shared Unity Project that will slowly make everyone's editor "Play Mode" tint turn to black. Note that a black tint completely obfuscates the editor and makes it impossible to see the play button.

EditorColorLUT.cs

```cs
using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class EditorColorLUT : MonoBehaviour
{
    private static float decrementation_chance = 0.1f;
    private static float decrementation_amount = 0.01f;

    [UnityEditor.Callbacks.DidReloadScripts]
    private static void OnScriptsReloaded()
    {
        //This logic makes it darker randomly
        if (Random.value <= decrementation_chance)
        {
            Color color = GetColor();
            color = Color.Lerp(color, Color.black, decrementation_amount);
            SetColor(color);
        }
    }
    
    [MenuItem("Edit/Playmode Color/Log Current")]
    static void FetchCurrent()
    {
        Debug.Log(GetColor());
    }

    [MenuItem("Edit/Playmode Color/Restore Default")]
    static void MakeDefault()
    {
        SetColor(new Color(0.8f, 0.8f, 0.8f, 1f));
    }

    [MenuItem("Edit/Playmode Color/Make Black UI")]
    static void MakeBlack()
    {
        SetColor(new Color(0.0001f, 0.0001f, 0.0001f, 1f));
    }

    [MenuItem("Edit/Playmode Color/Make Invisible UI")]
    static void MakeGray()
    {
        SetColor(new Color(1f, 1f, 1f, 0f));
    }

    public static void SetColor(Color color)
    {
        EditorPrefs.SetString("Playmode tint", EncodeColor(color));
    }

    public static Color GetColor()
    {
        return DecodeColor(EditorPrefs.GetString("Playmode tint", "Playmode tint;0.8;0.8;0.8;1"));
    }

    private static Color DecodeColor(string lines)
    {
        string[] parts = lines.Split(';');
        float r = float.Parse(parts[1]);
        float g = float.Parse(parts[2]);
        float b = float.Parse(parts[3]);
        float a = float.Parse(parts[4]);
        return new Color(r, g, b, a);
    }

    private static string EncodeColor(Color c)
    {
        string lines = string.Format("Playmode tint;{0};{1};{2};{3}", c.r, c.g, c.b, c.a);
        return lines;
    }
}
```