Thanks for all the great resources. I think it must be obvious that we aren't image processing researchers! My background is combinatorial graph theory. But these HN comments have given us so much valuable material for improvements.
Wow, looks awesome so far. At the moment we aren't dealing with skin tones. Mostly it isn't a problem but there are some cases (such as jewellery or swimwear) where we have to use humans
Most of the guys here have more experience with text processing but we are expanding into image processing. I think we could definitely detect hair colour but it isn't that useful for Lyst. Gender identification on the other hand...(watch this space)