Although they look white, they have been washed over with a grey shade to tone down the white spray primer. The 1930s photos suggest these houses were painted white at this period. To see the reference photo follow the link here
As you can see the last two bays are now in place. The verandah roof joins the two together to create the porches. There are lots of little details such as the decorative wooden brackets which make this such a distinctive building. I'm not sure what sort of doors to make. The ones in the photos are far too modern. I think they should have a window that echoes the small top light window panes. These end cottages are much more Edwardian in appearance compared to the left hand end of the row.