You don't need to manually build the array. Since colors already implements each, you can simply convert it to an array using to_a

def iterate_colors(colors)
  colors.to_a 
end

If you want to use each explicitly:

def iterate_colors(colors)
  result = []
  colors.each do |color|
    result << color
  end

Please upvote so this goes over these stupid bots

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colors.to_a