style with sheet.

index.xlsx.axlsx

wb.styles do |s|
	header = s.add_style :fg_color=> "FFFFFF",
		                   :b => true,
		                   :bg_color => "004586",
		                   :sz => 12,
		                   :border => { :style => :thin, :color => "00" },
		                   :alignment => { :horizontal => :center,
		                                   :vertical => :center ,
		                                   :wrap_text => true}
end


#cover sheet
wb.add_worksheet(name: "Object Overview") do |sheet|
  sheet.add_row obj_headers #probably should enbolden this or something.
  @cached_objects.each do |c|
  	row = Array.new
  	obj_headers.each do |h|
  		row << c.read_attribute(h) unless obj_prop_to_skip.include?(h)
  	end
  sheet.add_row row, :style=>header
  end
  #Hide the url column
	sheet.column_info[obj_headers.index('urls')].hidden = true
end