As I was getting ready to go to bed and turned off the lights I looked up into the sky out of my windows and saw an unusually bright object that seemed to change colors. It was brighter and bigger than any planet or star, and after a few minutes of observation I realized it was moving. It was fluttering and flashing different colored lights. I have seen UFOs before and this one was very similar to the one I saw when I was a teenager. I went outside on my balcony and watched if for a while but I had to go to bed so I went back in. I had a feeling it was going to be back, so next night about the same time I saw the same object, this time it was a little brighter and seemed a little closer to me. I have a feeling I'm going to see it again tonight. It appears right above tree line and it's right below the Orion constellation. It appears to be somewhere above border of South Pasadena, San Marino and Alhambra. I see helicopters and blimps flying by there sometimes, and I know that the object I am describing is neither of them, nor is it an airplane.