We can't make scripts for you but we can help you start one! Here is basically how to do it: 1. Touched event 2. BrickColor.Random()

Touched

Touched runs when someone touches the part:

script.Parent.Touched:connect(function(p)
    print(p.Name.." touched this part.")
end)

BrickColor.Random()

This chooses a random color out of the 64 different brickcolors there are on roblox(There are actually 100+ brick colors but some colors do not show up.)

workspace.Part.BrickColor = BrickColor.Random()

Find a way to mix these together and you've got your script! Hope it helps!