So, like, I'm applying a TGA partially transparent skin to a model. It works fine if the model is in front of any solid block or model, but when the model is between the camera and the sky( we look to the sky through the transparent part of the model) it gives me a blue background as if the sky is not there...

Here's the example:


The transparent part which is the hair tip, shows the concrete behind.



The hair tip show blue instead the sky. The JPG compression blurs the blue part but in the ingame it much more noticeable...

Do someone can figure what's going on?