How do you change this value from Color to Material?

Here. I tried editing the values... Heres the script

wait(1)
for i,v in pairs(script.Parent.Buttons:GetChildren()) do
    if v:FindFirstChild("ClickDetector") then
        v.ClickDetector.MouseClick:connect(function()
            script.Parent.Color.BrickColor = v.BrickColor
            script.Parent.Parent.Parent.DropColor.Value = v.BrickColor
        end)
    end
end

Heres the script with the one i tried editing and failed at it.

wait(1)
for i,v in pairs(script.Parent.Buttons:GetChildren()) do
    if v:FindFirstChild("ClickDetector") then
        v.ClickDetector.MouseClick:connect(function()
            script.Parent.Material.BrickMaterial = v.BrickMaterial
            script.Parent.Parent.Parent.DropMaterial.Value = v.BrickMaterial
        end)
    end
end