My camera cannot focus good so the pictures are not very good at all. I think these plugs are lean but I don't know why the tip of the plug is black. I thought that this would be lean if the other parts of the plug were lean?
This is off of a xfire 600.

Definitely hard to tell from that picture. Just curious, how many miles on that plug?

Yeah, I know the picture sucks. I could not get a better picture for some reason?
That plug has about 700 miles on it. I thought the color was a little funny because the other side was golden brown everywhere.

Try setting your camera to "macro" (usually denoted by a flower symbol) it will allow you to zoom in on close objects.

Thanks for the tip; I will try this.
I was thinking that a camera with all these buttons should be able to focus on an object like that!

OK, 700 miles on the plugs. Need clarification on something,.... when you say "the other side was golden brown everywhere", I'm assuming you're talking about the plug from the other cylinder? You have one plug golden brown, and the other one is picture here in this thread, rather whitish in color.

From which cylinders were the plugs respectively removed? (PTO side and Mag side)

Looks like you definitely have a lean cylinder condition if one is golden brown and the other is white.

Has it been running fine? Any modifications?

The plug pictured is from the MAG side. The plug on the PTO side is golden brown where the one pictured is more white. The sled runs awesome but I was just checking color for something to do and would like to understand this color a little better.
I tried to focus my camera closer with the suggestion from GuyFromTheNorth but had no luck!
Sled motor is totally stock and has never had any issues.

MAG side always run hotter. Was this just a removal after a ride or is it a wide open throttle chop check?

Great question...I forgot to mention that this is a normal ride check. I have since did one after riding hard and color was pretty much the same.

Normal riding checks are nearly useless IMO. The sled was probably idling before you shut it down right? So you are showing your mixture at idle = not very useful.