I started to paint the upper wing, I am using the diagram in the Datafile and a diagram that came with the CSM Luke decal sheet. The only difference I have found so far are Stbd top wing tip being Light Brown on the CSM diagram and Light Green in the Datafile. The DF shows an early Spad with rounded tips. The CSM sheet shows late production squared off tips, so I went with the Light Brown tip.
The paints I am using are all acrylic artist's colors mixed with Pledge to thin for airbrushing and to get some of Pledge's magical leveling properties. They are sprayed on a white primed surface. First the whole model, (top wing in this case), gets a coat of Light Brown, then the other colors get masked and sprayed over that.
I used Parafilm to mask and all was going well as I put a coat of Pledge to gloss it. Looked so good that I had to set the decals. I have a sheet of CSM Luke decals. I used this same sheet on the first Revell Spad I built and I do not recall any issues. The decals look great, but that ends when they get wet. First it took an inordinate amount of time for the decals to slide on the backing and they are incredibly fragile. Out of 2 roundels, a checkerboard strip and a large number 26. Only the 26 got applied without shattering to one degree or another. I had to apply multiple coats of Micro Sol, the last of which is still drying as I type. Hopefully that will get those decals to sucker down around the raised details on the wing surface.
The rest of the decals will get a coat of decal film in hopes they can be gotten onto the model unbroken. For anyone using these decals or the CSM Rickenbacker sheet, you need to soak them at least 5 min and they won't break on the backing if you are careful, spray some decal film and trim close and you just might not break them while positioning them on the model. You will need all your decal skills in play to successfully get them applied. Also it might be a good idea to mix up a little bit of matching touch up paint ahead of time. It is likely you will need a drop or two, especially around the aileron hinge line.

It doesn't look too bad from 3', but close up you see a whole crop of preventable warts. Common sense and experience should have dictated stopping at the first broken roundel and breaking out the decal film for the rest. Don't get the Wife started on my lack of common sense.
sp