CCTexture2D load from file will alway be CCSurfaceFormat:Color

[TruePluto]

When I use CCTexture2D load a PNG file directly via
public CCTexture2D(string file);
the CCTexture2D instance's PixelFormat will be set as CCSurfaceFormat:Color
I found that the raw code of the class CCTexture2D use the CCSurfaceFormat:Color as a default value.
public static CCSurfaceFormat **DefaultAlphaPixelFormat** = CCSurfaceFormat.Color;

stupid editing style everthing in one line.