Do insects that have UV sensitivity in their visual system see the UV portion of the spectrum as “color”?
As far as insects, it is really impossible to say for sure, but it seems that there visual systems are designed such that the UV part of the spectrum gets processed as another color response. Of course it is possible that they don’t see “color” at all and just use the different responses for different functions (sort of different sets of black and white images for different purposes).