Chroma key shader for WebCamTexture in Unity3D

Question

How can I make chroma key attribute to eleminate a color from WebCamTexture. WebCamTexture provides very limited control on texture.

Answer 1

Here is an example shader that could be used: http://pastebin.com/rxJak3jB

Answer 2

Check out the transparency shaders that come with Unity here. You simply need to update the alpha channel mask of your texture with the areas of the texture you want made transparent.