d2b sunburst R自定义颜色和字体

Question

    #  using a color column from the R dataset
  #  treemap has an amazing treecolors ability
  library(treemap)
  library(d3r)
  rhd <- random.hierarchical.data()
  tm <- treemap(
   rhd,
   index = paste0("index", 1:3),
   vSize = "x",
   draw = FALSE
 )$tm
 sund2b(
   d3_nest(tm, value_cols = colnames(tm)[-(1:3)]),
   colors = htmlwidgets::JS(
     # yes this is a little different, so please pay attention
     #  "function(d) {return d.color}" will not work
     "function(name, d){return d.color || '#ccc';}"
  ),
   valueField = "vSize"
 )`

是否可以更改绘图的颜色和字体？现在颜色是基于“ index1”列的，这很好，我想保留它。我只是想选择我自己选择的颜色。我认为这需要JS方面的一些知识，但对此我零知识。