Navigation lights are blue?

[Sethos 4,301]

So I've spent almost 2 days installing P3D on a fresh Windows install. Got all the OrbX stuff, Rex, Active Sky, ASCA, PTA, everything set up just right. 

And then I see my navigation lights on every single one of my planes, they seem to be ... blue?

http://i.imgur.com/aEEQdPL.jpg

No idea what causes it or what files need to be changed to fix it, so I have no idea where to turn. Has anyone experienced something similar and could tell me how to correct it? 

[klamal 282]

It's most likely your PTA preset. I have no idea how to tell you to fix it other than try a different preset or none at all.

[Sethos 4,301]

10 minutes ago, klamal said:

It's most likely your PTA preset. I have no idea how to tell you to fix it other than try a different preset or none at all.

Just tried replacing the ShadersHLSL with a clean one, plus clearing the shader cache. Still there, unfortunately. So it doesn't appear PTA is the culprit.