I had to check to see if that video was the same one I saw and yep it's the same one where I got distracted and lost count because this person in a fur suit casually wandered through the middle of the group XD Otherwise keeping count shouldn't be too hard if you can concentrate as they only seem to pass to the same colour even while they're weaving through each other. That might make it easier for your client to keep count if he ever tries again? ;D

_{I have the attention span of a gnat x_x}

For those who contribute their work effort, have you ever considered what the value proposition of your content for the audience is? Does it created to generate thought, change minds? Does consuming your content improve the lives of the audience in any way, give them a nice feeling, enact change for betterment? What are they getting out of it and, are you connecting their attention to what is valuable?

Nope XD (I think we touched on this previously)

Well I suppose it could do the other stuff if people chose to derive something meaningful out of it.