Light in western sky, 2times as bright as a satellite. Changed color as it moved around a very small area of the sky. Erratic movement and very fast for the distance.I was in Meadow Creek which is in the middle of some of the most rugged ground in B.C. The brightness and movement of the Light caught my eye. It was extremely fast for what would pass for an extremely bright satellite. The path was not predictable as a satellite is. The whole time I watched it, it never left "Its area". The light had a range or area it was flying, very small in the sky. If you held your hand outstretched, you could easilly cover the whole area. The color went from silver- white to pale yellow and occasionally blue. I cotinued to watch for 20 minutes as it darted around . I spend a large amount of time around all types of aircraft,and there is nothing on the books that could do the speeds this object did. It was crysatl clear, no other lights to interfere, as Meadow Creek has a population of about 300. The light was in the western sky quite high off the horizon of mountains. It did not leave, I left, I had to be up early for work the next morning. I had just finished work, had not been indulging in anything to deprive my senses.