Thanks my friend @coling!
The second to last pic was taken outside at midday with bright sun, the last was taken inside.
Also, in the last pic, the "medium gray" has also been applied.
It is true that Su-27 colors have given me a lot of concern during the last 20 (yes! 20!) years, since I started building my first Su-27: there's the "base" pale blue, then a darker blue and then a medium gray. Though a lot of credible research has been commenced by modelers and can be found at the Net, I have to say that I have witnessed quite serious variations at those colors not only through the years, but also between aircraft of the same time period.
Such observations led me to adopt the idea that standardization of Su-27 camo was not very strict, let alone that the shades quickly faded to a uniform bluish grayish coloring.
So, yes, I follow general Su-27 camo rules, but use shades that look "right to my eye" (whatever that means).
