And not, as you might thing, having a different color on the opposite side -- for this is a different sense of "vers-" being the one derived from Latin versere, to turn. I haven't seen this much, and only in the first sense, but I am intrigued by the second, as it apparently encompasses not just changing color based on what angle you look at it but actually changing appearance, as in:
The versicolor chameleons blended in so well I saw only one of the three in the enclosure.
Administrivia: Apologies for missing last week. Let's just say it was a holiday and leave it at that.