A little sweat, a little gravel dust and your white jersey is now light tan. On a side, I've always wondered why some cyclocross teams have white jerseys? That's even worse.
Yep, white for me to survive in the Az summers and for visibility.. It certainly may not be crisp white after several rides but I don't care.. Honestly, imho, no color is going to look good after several gravel rides and black just has no visibility which matters to me for the ride segments.
A good washing machine with a little oxygenated cleaner and good detergent will get just about anything out of synthetic fibers. Half of my jersey is white and I thought the mud at the Mid South was going to do it in this year. Looks brand new after a good wash. Now, if you are riding with a white merino jersey (they do breath quite well, even in the heat), you might run into a problem.
Well, while I agree about black jerseys, there ARE other colors than white and black you know...
And besides the issue of the color, they didn’t offer any explanation as to what made this kit so good for gravel.
Personally, I don’t believe in gravel specific clothing anyway. I divided my clothes by weather, non flappping aero fit, and compatibility with armor to decide what I wear on any given bike ride.