Well, this is turning out dark and moody, isn't it? I worked on the background with Pale Brown, Moss Green and Light Umber for the lighter area and darker greens and browns for the dark area and shadow. These colours have been juxtaposed with each other rather than layered on separately - I do not have the patience for layering one colour over another, I'd get bored! I've also refined the reflections, adding colour here and there and generally trying to make sure that the wide array of hues I've used on the bottle actually 'hang together' properly - if that makes sense.
I'm liking it better now that the purply tinge of the paper colour has all but disappeared. It's a bit weird looking I must say, quirky ?, and I'm not sure whether to take it further ...... you know, bump up the highlights, give it more contrast, stronger colour. My instinct at the moment is to leave it alone - I quite like it understated like this. I'll have another look at it in a couple of days, then decide.