This is a very good recipe - thanks so much for the detailed explanations in each of the steps. Although mine did not turn out looking as nice and tanned as yours - but it was tasty and my family loved the loaves! Thank you again Brian - I will try some of your other recipes too!
It might come from 2 step problem. The second fermentation maybe over so the gluten becomes fragile. If this the color will show light too. Or the very begging the dough gluten not develop enough. not strong to hold the air