For those worrying about how to find the green Sintech adapter, I have discovered 3 places where it still seems possible to get them:
I asked to sintech about 2-version SSD, They returned as below.
because we have 2 versions now, one is black , another is green, but you bought black version, then we send you black version. if you want green version, you should buy it from here: http://eshop.sintech.cn/ngff-m2-pcie-ssd-card-as-2013-2014-2015-macbook-ssd-p-1143.html
"ngff-m2-pcie-ssd-card-as-2013-2014-2015-macbook-ssd-p-1143" is containing 2 driver. They may rapidly change the adapter to Black without notify if Green sold-out.