Hi again,
I did build the Maggie a few years back and as always the MS kits are an excellent choice.
But I can't for life of me remember the light sequence on the mast, I think I represented them as being all clear/white. Some pics on Google show the Maggie with the later mast fit and the lights appear to be form the top a pair of green a pair of red a pair of green again followed by another pair of red!
If in doubt contact Laurie or Jackie direct at Slipway, they are really really helpful people. They might even see your post!
UPDATE: It appears that the top mast light is always white with a green below that and white below that then red at the very bottom, I think the lights shown depend on what the vessel is doing, when trawling there is a white, green, white light sequence, viewable from all directions. Lights are in generally two different categories..........Navigation lights/steaming lights and work/duty lights.
Hope the above makes a some sense, given time there will no doubt be some more informative and knowledgeable info coming your way from these great people on mbm!
Cheers, Dave