The former MorningMist here. It's not too radical a change; 'Niebla' is 'Mist' in Spanish. ^_^ I decided it was time for a change (MorningMist was both a mouthful and just not quite right) and Niebla seemed perfect.
That awkward moment when you jump out a window because your friend jumped out a window, then you remember that your other friend can fly. — Rick Riordan, The Ship of the Dead