Here are my top five nail polish for autumn 2015, if you are interested you can see the 2014 version and 2013 version.
First up I have Barry M Mustard, I think this colour is probably like Marmite. A very mustard colour, which reminds me of the 70's. I wouldn't wear this colour as it is but I really think it is great for autumn. I'd use this as a base for nail art.
Next is Barry M Chilli which is a gorgeous maroon, similar to Paprika but more red. Very much the colours which leaves go before falling off.
The next one is Leighton Denny Chestnut Charm, the only shimmer I chose. I like this one because it again is a red toned brown, again similar to autumn leaves. Has a shimmer to it going from red to brown. This would be one I would wear as it is, a little more interesting than a cream finish polish.
Finally I have ELF Green Machine, a cream deep pine green colour.