Aviation Academy Graduate Badges, what is the significance of the colour ?

[plmurphy]

I have a number of graduate badges in my collection all to what I believe is the State Aviation Academy (feel free to correct me if I have the name incorrect). So far I have the same badge in navy, red, and yellow. I am also aware of a pale blue version. Does anybody know which disciplines are represented by the different colours ? Pale blue, for example, normally represents pedagogical studies but that is hardly the case for an aviation academy !

The badges are attached for those who are interested. First up, the navy version.

[plmurphy]

Next up, the red version, more a sort of dark orange.

[plmurphy]

Finally the yellow version.

Any help in getting more information on these would be appreciated.

Paul

[desantnik]

State Aviation Academy (feel free to correct me if I have the name incorrect). .

Better to say "Civil Aviation".

[plmurphy]

Better to say "Civil Aviation".

Many thanks, anybody know the significance of the different colours ? ie. which branch was represented by which colour since I presume this is what they indicate.