Reminder, when you purchase the thread, buy more and if you don't use it, return it (like any of us would not just keep it for a future project!!!). But, when in doubt, that is a better option then to run out just before you finish the project.
I am always telling my customers to keep their receipts (I keep a baggie with the project). Then, they are not only able to return an item, but if they need more, they have the actual sku # so they get the exact item. You have no idea how many shades of beige there are until you try to remember what you previously bought!