That was quite an unflattering review! He went on-and-on about the background noise and then eluded to a poor application of the Lundahl transformer in the Colour Box, by making a comparison to the Cali76-TX use of a Lundahl transformer. He goes even further to diminishes the skill level of JHS by saying he is just a "stompbox builder vs studio equipment engineer".I am sure that JHS copied the original Neve circuit with the transformer, so the reviewer is essentially making a comment about the Neve design more so than JHS.
He then states, "...Bearing all this in mind, it’s not fair to make comparisons to other pedals as there really isn’t anything else out there that does what this pedal does." Then he continues to make comparisons to other pedals again when he is suggesting upgrades to a V2 version of the Colour Box.
At the end he gives the pedal 4 out of 5 stars.
-Frank
"The hotel was awful. I got mugged in the lobby, there were cockroaches in the shower, the mattress was wet with dog pee. 4.5/5 would stay there again."

I am sure that JHS copied the original Neve circuit with the transformer, so the reviewer is essentially making a comment about the Neve design more so than JHS.