Spark plug color - how to diagnose

[GregF (Greg Fine)]

Looks good to me. Somewhat Chocolate Color. Too light would be on lean side, too dark would be on rich side.

See this article for more details:

Reading spark plug color

Plug color only indicates how the jetting is for the RPM range you use the most. For most people that is high RPM which means it indicates whether the main jet is too rich or too lean. That is very important but having that correct does not mean your mid throttle jetting is right, or that your jetting off of idle is right, or that your idle jetting is right. I highly recommend a good jetting calculator to know if the jetting is rich or lean between closed and fully open throttle. Read the color…