Black Triangle with Green Lihgts!My wife and I were returning home from breakfast out when she saw this triangular UFO. We were travelling HWY 290 outbound (toward Austin) and she was looking in an easterly direction when she saw it.The UFO was (isoceles) triangular in shape, a flat black in color, and had green pulsating lights in each corner. For the duration of the sighting, the object appeared to simply hover in one spot in the Houston sky.Because the oject was in the part of the sky that I, the driver, could not see, she was the only witness to it. She took her eyes off the object for the briefest moment and when she re-focused on the area in which she had seen it, it was gone. It appeared to have simply disappeared.My wife thought of every possible explanation for the object (helicopter, hang glider, etc) but nothing could explain its strangeness.I am the UFO buff in the family and you can imagine my disappointment that I could not see the thing!