They are the most common solar panels which are blue and highly reflective. As solar panels must be installed outdoors, dirt are inevitable.

There is also a more specific solar panel which is Tesla solar rooftop that can be downloaded at
Rooftop 0003

These tiles look alike Tesla solar rooftop tiles that are black with irregular stripes as a pattern.

The tiles reflect a subtle of rainbow color by very close examination. Besides, a tiny solar photovoltaic can be seen underneath the stripes.