To programme a key yourself, you need two keys. One of which has to be a master, not necessarily a 'red' key.

You dont have to go to fords to have a new key made. Any auto locksmith can do it. If you just want a spare key, there is a function in the system to 'add a key' to the system. but if you lose all your keys, then although it is still possible to just add another to it, so you have a key, any lost keys will still start the car. so it is safer to have them all deleted from the system. In this case, they system will not let you programme just the one key, it will only let you programme two. One being a master.

They are all the same chip, there is no difference between a red key and a black one... hell, I even have yellow, pink and blue one (I kid you not)

Another thing.... You do not need to use a brand new chip. One out an old ford key will do the job as long as it is the correct chip (glass 4C, or a carbon 4D (ID63))as you actually programme the car to recognise the key, not the other way round