[gdpmumin]

I see what you're saying, but it has a different icon because it's a different app and that's the icon the developer chose to use. Same reason your calendar icon isn't an envelope or your BrickBreaker icon isn't a globe. It differentiates the app from other apps. Just guessing, but there very well may be licensing issues with using RIM's icon. Maybe that's why they didn't go with that one.

There isn't a way to change it manually.