Looking at a T-Mobile BlackBerry Curve 8520? You may want to hold off for a bit as it might be available soon in a full range of colors including silver instead of just black. Plus, we hear that the 8520 might be available in even more colors soon – think BlackBerry Pearl color options. CrackBerry is reporting that the silver color option will be available in early August and the other colors will come later down the road.