I'm a bit divided on this one, Neil. It's certainly not junk and I like how it's a bit difficult to identify, but I think the upper left is a bit overall dark.
I wouldn't call it junk, but it doesn't really work for me. It could be the weed that jomari mentioned. Something I can't quite put my finger on is just throwing it off.
I find it vaguely confusing (and you know how much I love your stuff.) The color one has context--you can tell it's a beach scene by the tones and somehow is a stronger abstract than this flat version.