Bruno风格的每层layer预设的颜色值,按顺序使用颜色值。实际层数超过该数量需要自行定义。
static const List<Color> defaultLayerColors = [ Color(0xFF3575FC), Color(0xFF0984F9), Color(0xFF6BB7FF), Color(0xFF93CAFF), Color(0xFFB5DBFF), ];