Problem with an if statement and checking if a part in a tool is a certain colour, any solutions?

I'm bug fixing and making sure that once a part in a tool changes colour, it stays that colour by doing a simple check. Here is the code that I have tried so far:

-- Adding vanilla flavour
game.Workspace.flavours.addVanillaFlavour.Touched:Connect(function(Object)
    if Object.Parent:FindFirstChild("Milk") then
        if Object.Parent.Milk.BrickColor == ("Institutional white") then
            Object.Parent.Milk.BrickColor = BrickColor.new("Cool yellow")
            Object.Parent.Parent.Name = ("Milk with Vanilla")   
        end
    end
end)

The problem is 100% the if statement checking if the colour is Institutional white, but I'm unsure of why it isn't working as when I remove that line it works normally.

However, there is a problem saying 'BrickColor is not a valid member of Tool', even though if I remove the if statement the code still works. If you understand what I mean, please be sure to answer! :)