Building a model railway isn't just about what you build on the board, it is also about the infrastructure around it. Last year I installed a sun blind in the layout room, probably one of the most important things I've done for the layout! The room is East facing so gets strong sunlight in the morning, hopefully the blind should prevent any sun bleaching to the layout and especially the rolling stock.
The latest addition has been an improved light replacing the lamp which I was using earlier. The new light is much higher up and so provides much more usable light. The old lamp was ok but parts of the layout were in perpetual shadow. Now its a lot easier to see most parts of Birches Green!