[Rd] Wishlist: axis( ) could take vector of colors (PR#7930)

[epurdom@stanford.edu]

Hi,
This is not a bug, but a simple enhancement suggestion: that axis( ) also 
allow option "col" to take a vector of colors equal to the length of 
"labels". Currently it allows it, in the sense that there is no error 
message, but the function will use just the first element of the vector.

Example
 > plot(1:5,exp(1:5),axes=F,type="o")
 > axis(1,col=c(rep("red",2),rep("blue",3)))
gives all red axis notation.

Thanks,
Elizabeth Purdom
(Windows XP, R 2.1.0)