I've switched from C4D (getting too costly for a retiree) to Blender 2.8. I've created a simple scene consisting of the monkey atop a plane. Why is everything in the viewport and eevee shaded in violet (see attached screenprint)?

I've switched from C4D (getting too costly for a retiree) to Blender 2.8. I've created a simple scene consisting of the monkey atop a plane. Why is everything in the viewport and eevee shaded in violet (see attached screenprint)?
