A few people asked - I tried all of the neumok colors - yes the blue is very dark, as is the red. Apart from the acorn, I view these as almost exclusively jeans shoes, so I wasn't too keen about blue shoes and blue denim. Decided on red neumok and green rush street. Red neumok has been really good for dress casual. As much as I like the rush street, the green has been kind of tough. I would imagine the blue might be tough too.
I wear the blue sockless with shorts in the summer and pair it with grey pants in the spring and fall or on the rare chance I wear pants in the summer it goes with my lightweight cotton pants. My Green ones have taken a HUGE backseat once I got my green Shaker Heights made last year.