Rawson allow from memory 2 different colours inside but 3 outside something like that. You can pick any taubmans colour you want. As you are in an estate, the estate might have certain rules in regards to colour, but I would guess that would only be external.
Just for clarity, whilst Rawson's use Taubmans, you can in fact choose any colour from any paint maker. We have a Dulux colour in our place. And I am with you, if there are colour restrictions these will more than likely be external and estate restrictions.