Not all of that wreckage is smoking bubba. Have you ever heard of satellite image manipulation, psyops and information warfare? Seen lots of it. Remember Ukrainians have Russian equipment and theirs gets destroyed in combat too. It can be easy to pass their own equipment which was destroyed as Russian losses.
The color schemes are different indeed, and some vehicles are unique to either military. In some photos and videos the Ukrainian propaganda is fixing it by applying the color filters, making vehicles look darker and it is visible by unrealistic background. The most obvious example is a tractor towing a Tor AD, which is Ukrainian. There are SA-8s photos with filters applied to make them look Russian even though the type is pulled in Russia long time ago. You can still see the elements of pixel camo on some vehicles which is unique to Ukraine. Russia doesn’t use T-64, BMP-1, Gwozdika SPGs for decades as well. They don’t use cage armor against shaped charges.
Not when it has dead Russian soldiers in it. I think the open source intelligence people do a pretty good job of vetting images and video.
If you can find a fake go ahead and do so. That helps everyone get more accurate data.