the reason it came out more golden is because you are reusing the yeast and it is fermenting it better.
you can keep reusing it as much as you want and it should keep coming out cleaner and cleaner
Actually the opposite? The clearer one was the first opening of the yeast bottle (as above) the latest (black exploding) is the 2nd time iv'e used it. But you can wee why with the amount of malt/hops + dark sugar that was added. Have you experimented with fruit at all? Thinking i might try an apple or grape beer, not to sure where to start though?