This was my first attempt at marbling. Instructions dictated that the gear bays should be revell paint 57, so I decided to use that as a base coat for the entire aircraft instead of black. The blue is a custom mix of revell 50, 49, and 301 mixed at about 10 to 3 to 3.
The "middle" color in terms of saturation. I was looking to match something along the lines of FS35187. I used a mix of revell 50 and 51 at a ratio of 10 to 2.