There are actually a couple of other changes that are gonna happen between the original 303 and the refit and upgrade (yup, thats 3 seperate bridges!). Sean has already done the screens colour change, there is also a change of colour in some of the lights around the bridge, from blue to white. Both of those take effect on the change from the original to the refit. For the upgrade, the light on the front of the helm and tactical stations join together to form one light (also white).