Fun thread!
When I started getting interested in fashion about a year ago, I made a decision to stay away from black tops, since they are often unflattering next to the face. I also had had an abundance of black bottoms, which I was sick of. So, after having done without black for the better part of the year, I am itching to add it back in! I have already bought a pair of pants and a halter top in black.
So...for neutrals, I have to say black, navy, optical white, and cream (cream is for the cooler months).
Signature colors are...none. Right now I am enjoying trying out new colors in my wardrobe, so I don't have any signature colors. Still too new at this.
As for new colors to audition, I have been auditioning corals this year, which I love. I wanted to audition mint green, but I couldn't find anything, and since that is really a spring color for me (as opposed to summer), I will probably just have to hold off for a year. I would like to find some tops in mauve, but I haven't found anything that fits that I like.
I hope you can find more granny apple green. That color looks great on you! And it's so unique.