I keep this Diafold sharpening kit in my camping gear - good stuff. Doesn't include black, but never needed it.
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My portable kit DMT stones are definitely harder to use than bigger ones, but I found the guide helps to change the technique from using them like a normal stone where they'd feel too small.
I've only really used the blue and red for a quick touch up.
I made the mistake of using too much pressure with the blue 320 grit on my Hinderer XM-18 the first time I used it, and it really wanted to tear up the metal when I laid it back too far trying to re-profile a 20 degree edge to 17 degrees. I over-did the laying back and marred the side of the blade finish. That was when I thought I could do things without the guides and I was wrong.