Red Nylon Band?

You won't find red anywhere. Only black and dark green. They are so good that I would buy other colors right away as well.

Blue one: pl.aliexpress.com/.../1005003904187933.html

Aliexpress is your friend.

No red :(

I am also looking for either red or, preferably, black with some red accents - to match a black watch face with red accents and the red button on the Epix. 

I was surprised I could not find any on Amazon or Ebay.

Nick Mankey does a burnt red: https://nickmankeydesigns.com/shop/the-hook-strap-classic-elastic-watch-band however if you ask he may be able to do a pure red (not sure why he doesn't already offer it).

I ordered a few from there, just got a delivery date of June 27th 

Something I did was use a 26 mm band with my epix because I don't love the smaller size and with nylon it works great and look better imo. Just an idea in case anyone else has similar thoughts as I do. 

Same — it is a simple, yet elegant, workaround to the narrower Epix bands!