As the green dominates the grey, I've since tried the reverse placement. The grey works OK as a lid colour but when applied to the lid the grey is quite sheer. I was surprised by this as it does not appear to be sheer when swatched. I also found that the grey needs to be applied over a primer. Applied to my bare lids, it is a little patchy.
I have to concede that Delphes has been a disappointment. It looks very nice in the pan but the colours and eyeshadow formulas are very hard work for me. I find it interesting how NARS can be so variable in terms of their powder eyeshadow, these are complaints I have encountered before.
Have you tried this trio? How do you find it? Is there a particular knack to it?