Is there a way to make the background colors in a radar chart different than
white? I need to create a radar chart with four ranges from center out -
dark green in center, next region out is light green, next region is yellow,
and the outer band is red.

Also, can I make the scale not be equal (e.g. 0-33%, 33-66%, 66%-90%,
90%-100%)?

Thanks for any help.

Jeff