======== hg.conf alwaysItemRgb=(not set, defaults on)
one setting
  (nothing)                                            item colors
  itemRgb on                                           item colors
  itemRgb off                                          one color
  color 255,0,0                                        one color

both settings
  itemRgb on  + color 255,0,0                          item colors
  itemRgb off + color 255,0,0                          one color
  color 255,0,0 + itemRgb on  (other order)            item colors

from a parent
  child of a stanza with color                         one color
  child says itemRgb on, parent says color             item colors

no track
  NULL                                                 item colors

======== hg.conf alwaysItemRgb=off
one setting
  (nothing)                                            one color
  itemRgb on                                           item colors
  itemRgb off                                          one color
  color 255,0,0                                        one color

both settings
  itemRgb on  + color 255,0,0                          item colors
  itemRgb off + color 255,0,0                          one color
  color 255,0,0 + itemRgb on  (other order)            item colors

from a parent
  child of a stanza with color                         one color
  child says itemRgb on, parent says color             item colors

no track
  NULL                                                 item colors

