Here's a quick revision of what I have-

4 color day upper and lower pattern using Mark Miller's color matches.

5 color day upper and lower pattern using the matches from the Aerodrome forum, generated by Patrick using Dan San-Abbot's input and knowledge.
Check these in Photoshop and see if the paths are there on your end. With the paths you can make the pattern any size.
All that is known about these colors are from surviving fabric samples which may have change a good deal since the great war. I'm not sure if it is known if there was only one color version for each or a range of color variations depending on manufacture. For me, I feel there must have been some variation. Plus, there is the monitor factor. If you want accurate colors I'd suggest looking over all the information you can find and making up your own mind what looks most correct to you. There are plenty of versions to choose from. The versions I posted are the closest to what I'd like to see but may not be the most accurate
Now get those planes covered