Mobile device part and repair service Zeetron has introduced its new iPhone 4 Color Swap service. Using “original” repair parts, the service has customers mail in their current black iPhone 4 units, which are received, processed, and shipped back the same day via FedEx overnight. The service replaces the front and back panels of the black iPhone 4 with white repair parts, which includes both the LCD and digitizer, as well as the Home button. Zeetron charges $199 for its mail-in iPhone 4 Color Swap service and also sells do-it-yourself kits for $188. Either option is likely to void any current Apple warranty; proceed with caution.