3rd party app icon not theming

[MN1987]

I'm trying to theme an icon for 'isub' via the bundles folder method. The icon i want to use is a circular icon, not the standard rounded square icon. However, when I activate via winterboard, the formerly circular icon develops a black border, turning it into an ugly rounded square icon with black filling in the difference between the original circular icon and the new square icon. I can get the image showing using the icons folder method, but it looks awful and not retina quality.

How do I fix this so to get a retina-quality, non-black bordered (i.e. circular, not squareish) icon via the Bundles folder method?

[MN1987]

Bump.

[SnugglyFoo]

the folder should be named "com.einsteinx2.isub" icon name should be "[email protected]"