For me, it depends on what I'm working on, sometimes direct color, but I bring it too flashy and not sharp as I would like, with BW/colorisation approach, it make more great accident when applying color, but it can be really grey first, it really need work since the first color pass is done.
I think I can understand your meaning.Sometimes I just fear that I draw too much more of the grey shape that leave no space for colour-imaging. BTW I'm learning French myself bit to bit LOL What a beautiful but difficult language! I don't know how to remember to spell.
Qui est-ce?C'est Anne.Est-ce Anne?Qui,c'est Anne :-D