Hi Caro! BTW I wrote a longer comment at the bottom of page 2--I don't know if you went back that far.
I'm not wild about purple or green in general. My mother and one of my sisters have always worn those colors to death, and wore them together a lot. The really dusty grape-purple I've been given has been around the past few years, often in prints with black and grey, and I don't like the general feel of that color combination. I wore periwinkle ad nauseum back in the 90's and I'm kind of done with it. A lot of people can wear that color fairly well I think. It's true I can wear certain greens, as well as certain browns, but I have to be very, very careful they don't contain too much yellow, or they are death to my complexion.
The other thing, which I've mentioned around the forum before, is that I associate some colors with certain seasons. Even though I love a turquoise blue, I have a hard time wearing that color in F/W. Conversely, I love a mulberry color for F/W, but it's not a favorite of mine for Summer. Somewhere along the line, I decided I wanted as much of my wardrobe to be seasonless as possible, especially since I've been trying to upgrade it a bit. If I'm going to invest in a cashmere scarf, for instance, I don't want to feel funny wearing on an airplane in August (ETA high Summer--forgot you were in Oz). I want it to look good with black as well as white (I'm weird in that I don't like pairing a whole lot of colors with black, even though black supposed to "go" with everything).
That leaves me pretty much with denim blue and my neutrals: charcoal,/black, ink/navy, taupe/khaki, and cream/white. Light and medium grey look okay with my skin and eyes, but I don't like it against the blonde streaks in my hair. I'm sure I'll revisit it when I'm completely silver. I'm jealous of the neutrals in your palette, it seems like you have a disproportionate share of them, and you get olive/sage, you lucky duck!