Use of 'white' iconColor results in black awesomeIcons

[atlight]

The use of the string 'white' as the iconColor for awesomeIcons results in black icons being displayed

library(shiny)
library(leaflet)

d <- data.frame(x=c(2, 3), y=c(7, 2))

ui <- leafletOutput('mymap')

server <- function(input, output, session) {
  output$mymap <- renderLeaflet({
    leaflet(d) %>% 
      addAwesomeMarkers(lng=~x, lat=~y,
                        icon=~awesomeIcons(library='fa',
                                           icon='plus-square',
                                           iconColor='white',
                                           markerColor='blue'))
  })
}

shinyApp(ui, server)

The issue is specific to the string 'white'. The equivalent hex code, '#ffffff', results in a white icon.

There is some special-casing of 'white' at

leaflet/inst/htmlwidgets/plugins/Leaflet.awesome-markers/leaflet.awesome-markers.js

Lines 78 to 84 in 9bf137b

	if ((options.iconColor === 'white' || options.iconColor === 'black') &&
	options.prefix !== 'fa') {
	iconColorClass = "icon-" + options.iconColor;
	} else if (options.prefix === 'fa' && options.iconColor === 'white') {
	iconColorClass = "fa-inverse";
	} else {
	iconColorStyle = "color: " + options.iconColor + ";";

which may be to blame.