Removing buttons on derma menu

I may be mistaken on what its called, I am still a noob after all. But in my gamemode, players buy weapons, and then I save what they buy to a text file. Is there a simple way to remove the buttons of what they purchase so they know what they have bought versus what they havent?

Maybe you could make it change text on click or coulour ect not so sure about removing it

You could do

[lua]
MyButton:SetVisible( false )
[/lua]

or…

[lua]
MyButton:Remove()
MyButton = nil
[/lua]

Not sure