local part = script.Parent  -- The part that triggers the effect

local function onTouch(hit)
    local character = hit.Parent
    local humanoid = character:FindFirstChildOfClass("Humanoid")

    if humanoid then
        for _, v in pairs(character:GetChildren()) do
            if v:IsA("BasePart") then
                v.Color = Color3.new(math.random(), math.random(), math.random()) -- Random RGB color
            end
        end
    end
end

part.Touched:Connect(onTouch)