bright orbs of light in the sky

At first I thought it was a bright star then I notised it was flickering red, green and white.  I was it two nights in a row.  First night it was just one hovering low in the sky lasting for about an hour.  The next night (tonight) I saw it again at a different location and a second one appeared about an hour after the first one was hovering.  The second one was parallel to the other and brighter and flickered red and blue like a firecracker.  When the other appeared the other faded away and then the second one flew over my head slowly with out any sound just flickering red and blue and white slowly flying into the distance.