Here's a system from the public domain that's similar.
...To commence play, we first wait for either 3 repeating colours or 3 alternating colours - so we wait for RED/RED/RED or BLACK/BLACK/BLACK or RED/BLACK/RED/BLACK or BLACK/R...
...To commence play, we first wait for either 3 repeating colours or 3 alternating colours - so we wait for RED/RED/RED or BLACK/BLACK/BLACK or RED/BLACK/RED/BLACK or BLACK/R...