Banner / Logo / Letterhead Design for Clothing Company

We are seeking to spruce up and update our company logo. We are in the hip hop and urban clothing business so we need something fresh and impressive to catch our customers' attention. Must be an original idea and finished logo sizes must be 850x120 pixels and 425x60. We will also request greyscale copies as well. Must contain company colors of green, charcoal black and yellow. Must incorporate the idea of a island and a palm tree or palm branches. This can be abstract. Need at least 5 design ideas submitted. Winning design will be a professional-looking design that meets all requirements while maintaining a fun spirit. References of previous work are of the utmost importance. We plan to award this project to a bidder within 3 days.