Hi, I sent you an email about this but might as well post it here, too. I wanted to place an order today so I could use the Happy 4th promo code. One of the items I wanted to buy is a 510 starter kit in black. According to your site, the only black kits in stock are the ones with the purple LEDs. I tried to buy the kit repeatedly, but whenever I would click the "buy IT!" button, nothing would happen. I was able to add other items to my cart, but I wanted to buy the whole order at one time, so I bought nothing. Please let me know how I can order a black 510 kit (LED color not important), and whether I'll be able to use the Happy 4th promo code once I've heard back from you. Thanks.