#' The extended colour palette
#'
#' @name gpalx
#' @param n a positive integer
#' @details This function interpolates the original Grattan palette for a large (possibly infinite) number of factors.
#' @return A vector of n HTML colours.
#' @export
gpalx <- function(n){
grDevices::colorRampPalette(colors = pal.6)(n)
}
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