TRTL BOT ( has released their iPhone 4 cases in colors to reflect individuality while encouraging environmental awareness and social responsibility. 

Manufactured in the Los Angeles area, the TRTL Stand 4 and Minimalist 4 are designed to protect the Apple smartphone without adding bulk. In addition, each iPhone 4 case contains at least one recycled plastic water bottle and the proprietary ability to multifunction as either an iPhone 4 stand or a card holder.

Both the TRTL Stand 4 and the Minimalist 4 are currently available in black, white, grass green, pink and sky blue for US$29.95.  For iPhone 3G/3GS users, black and white versions of the Minimalist 3G/3GS are also available for $24.99.