Beautiful ! You also posted this photo a few months ago : http://screenshotcomparison.com/comparison/188516.
The colors and the correction I tried to do could be a litte wrong, but accordind to it, there seems to be differents colors in the Tantive IV walls : the walls themself are slighly mint colored, whereas the “boxes” on the walls are off-white but on the yellow side. And there would be a third tint for the door jambs, which are a more neutral white.