I'm glad to hear that you enjoyed it! I spent a while on the sound design alone. I needed the music to emphasise the horror of the thing you eluded to ... but also how it can turn into a rich sadness.
Also, Soma is amazing - the central philosophical idea to the plot makes for a baffling yet perfectly logical opening and possibly the best video game ending I have ever experienced.
Congrats on unlocking the epilogue! The board of coloured dots does have a meaning. What the colours indicate is straightforward, but I'm guessing you're either asking why some colours are duplicated, or why some circles are filled in. I'll cipher the answer with rot13.
Gur pvepyrf ner n puebabybtvpny fhzznel: rzcgl pvepyrf jrer snyfr cbfvgvir qvirf, shyy pvepyrf jrer gehr cbfvgvir qvirf.