generates color(s) that will appear on the surface facets of "persp" plot
inspired by similar function in package fields,
unfortunately made unavailable in most recent version of fields
Usage
drapecol(A, col=femmecol(100), NAcol="white")
Arguments
A
matrix with input grid
col
color palette
NAcol
color of 'NA' elements
Value
a vector of character strings giving the colors in hexadecimal format, one for each surface facet