Yes Kevin , you are right. The colour looks like the RLM76. However I don't think it is a correct tinge of it. In my humble opinion the cockpit colour depended on tints of primers that were used for preservation of metal, wooden parts of the plane. Of course it is possible Russians could follow painting instructions at the pre-war period of time and at the beginning of the war . But when they started suffering from shortage of many things including paints and time , the JRD rule became the main one. For instance, it there was enough of light blue or light grey paint in a factory they used it almost for all and didn't take care of any rules.
PS... JRD stands for "Jak ręka da" - what we can.