BrickColor.new Doesn't Work For Simple Script?

Hello there! Do you have an answer? I have a problem! You see? I have a script, and it works... for the most part. But why is the color not changing when the brick collides? It does though change the material so I am confused! Did I mess up?

function onTouched(hit)

if hit.Name == "Part" then
hit.BrickColor = BrickColor.new("Lily white")
    hit.Material = "Sand"

end
end

connection = script.Parent.Touched:connect(onTouched)