Woodlice vision

This question was posted in the bumblebee section below.

Hi there! Sorry for asking this here. But do you know why woodlice 'prefer' red light to blue light?

I had never heard of this before. I just thought that woodlice prefer low light levels. So does anyone else out there know about this?

I imagine it would be easy to set up an experiment using LED light which is high in the blue end of the spectrum, and an incandescent lightbulb which is high in the red end. But my money goes on the woodlice scuttling under and cover they can find.