Hi, the DTBs are a light brown, camel color, so if you're looking for a real brown some of the others may be a better option. If however you're cool with that color then I highly recommend them: the DTB fabric has a really nice heft to it (I have a pair of RRL Slim Straights which use the same fabric) and are a great casual alternative to khaki chinos.
Got the moss herringbones yesterday. The color is completely different to the swatch on the product page (https://www.weargustin.com/store/1497); a bright green. I was expecting a tasteful olive/brown tint as per the swatch. I'm a huge fan of non-indigo selvedge jeans (as my Instagram account will attest), but I'm unsure how to wear these. I'd be interested to see some outfits with these.
A workshirt in this material would be cool though.
On the Aaron workshirt, I got this today & like it. It's a soft cotton/linen mix & the fading is quite tasteful. There's selvedge on the gussets (with chainstitch runoff), one placket and inside of both pockets.