Singapore Airlines has been rationalizing their operations and one of the changes that they are making is getting rid of their subsidiary Silk Air and integrating its operations in to the mainline airline. Silk Air has ordered a bunch of 737s from Boeing and these are in the process of being delivered. A number of the planes were already painted in the Silk Air colors and apparently the airline determined it was cheaper for them to repaint them than to have Boeing do it. Consequently, they are being test flown in the old colors.
I assume that later jets will be painted in Singapore colors as they come off the line (depending on how much Boeing charges for that change order) but I have yet to see one in the new colors. I hope to get one before too long since I don’t have any plans to be in Singapore for a while. We shall see. I have got some distant shots of one passing near the house as it returned to BFI as well as some shots from BFI itself.