Random Pixel Tool [Solved]

[TiRoTa]

Tool type: Paint
Tool name: Random Pixels
Tool icon: A 4x4 square with random colored pixels

Tool action on Left click:
Colors a defined square in (for example) different green shades

Tool action on Right click:
Does the same, but with the second choosen color

[GlobbyLikesSlime]

This would help me so much

[Sphax]

2.8 contains a noise fill tool which should do that kind of effect