Question

I want to style my Excel table using spreadsheet gem.

I want to make my table look as in mine view, like this:

Here is mine formatting code:

    header_format = Spreadsheet::Format.new :color => :black,
                               :weight => :bold,
                               :size => 10

DOCUMENTATION: http://spreadsheet.rubyforge.org/files/GUIDE_txt.html

Can I do it using spreadsheet gem OR I need to use only standard colors ?

Answer 1

Found this post – http://andisxp.blogspot.com/2011/12/export-to-excel-with-spreadsheet-gem.html

  Instead of modifying the gem though, I would suggest using the following two 
  lines at   startup, they modify constants which isn't very nice but maybe 
  preferable to modifying the gem just to get some color working.

  Spreadsheet::Excel::Internals::SEDOC_ROLOC.update(:blue_gray => 0x001f)
  Spreadsheet::Column.singleton_class::COLORS << :blue_gray