Yes, AliExpress can be royally confusing especially when buying Longyao-Yinman products which ALWAYS seems to offer very out-dated and/or totally screwed sales entries, pictures, and listings.
Taobao
Jacky Ku's (aka Mr. Gu's) Official Longyao-Yinman Store on Taobao is:
HERE or
HERE (they are a couple different store faces actually but all are one in the same it just depends on how you enter into Taobao and under which language).
AliExpress
Currently, the following AliExpress Stores carry Longyao Yinman products:
AVCCK Earphones Store (2847025) -
I have ordered from here numerous times without issue; some members have reported issues (e.g. being sent the wrong product)
AACKCK Earphones Store (912249322) -
I have ordered from here numerous times without issue; never seen any reports of issue by other members
AVCKCK Earphones Store (4892013) -
I personally have never ordered from here; but I know members who have and have never seen any reported issues
Now the issue with these three (3) stores (especially the first one) is that they have not updated their currently available product pictures and typically have a number of gross errors in the specification fields (which is quite common for AliExpress stores to do in general, LOL!).
It is imperative that you always message the store directly and ask for a picture of the current model/reissue that they are selling so you know exactly what you are getting.
Gray vs Brown Error
There has never been a gray colored shell offered by Yinman (Longyao-Yinman) only various shades of brown, red, purple, black, and white (
more info here).
This particular choice that you are seeing was for the older and no longer available
2016 Yinman 音曼 2.0 醇净 600 MMCX which was reissued in 2018, 2019, and 2021 and came in both light to dark reddish-brown and dark ebony black Sandalwood shells. To make it even more confusing the specific type of sandalwood is Purple Sandalwood which has a wide variety of colors ranging from a light reddish-brown to red to purple to a deep dark ebony piano black. So the choice offered was originally for either the black or brown mmcx version which again is no longer available.
Also, please note that it is rather common (especially on AliExpress) for brown and gray colors to be mixed up due to being miss entered by the stores and/or being poorly translated by internet browsers and other automated translation tools. One can quickly see the reason why:
灰色的 = GRAY
棕色的 = BROWN