RBI Grade B Officers 2011 dec Paper

Directions (150-155) : Study the following information to answer the given questions:
In a certain code,
 ‘weapons hidden in town’ is written as ‘white black yellow red’,
  ‘ready weapons for attack’ is written as ‘greyindigo red green’,
 ‘hidden for own safety’ is written as ‘silver grey violet white’ and
‘own town under attack’ is written as ‘violet blue indigo black’