Don't let this be a detriment to the actual business. Your best employees would probably enjoy spending more time on real work and less time 'bikeshedding' [1].
I should have made it clearer that this shouldn't be allowed to individuals not meeting deadlines. That would not make sense. But actually, one of our best employee actually enjoy a little bikeshedding here and there. I blame his young age but it actually bring some fun in when it's most needed. Sometimes you just need to cool down.