Peterborough Rainbow: The rainbow Mystery Cache
thisisace: I've removed the pot of gold from the end of the Rainbow! Congratulations to everyone who found it.
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Peterborough Rainbow: The rainbow
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The Peterborough Rainbow is a series of 7 caches, each loosely linked to a colour of the rainbow. Each contains information needed to find this final bonus cache.
To find this cache, you should have collected 2 formulae for sets of co-ordinates (A) and (B), along with 5 colours and their corresponding numbers.
N.B. If you found the Orange cache while the lid was missing: Orange = Violet minus 1.
Now, you need to go to Co-ordinates (A) and look for an orange sign on the wall.
On this sign, there are P people playing with M marbles.
You also need X = P + M.
Put these numbers into co-ordinates (B), which will lead you to the End of The Rainbow!
Additional Hints
(Decrypt)
Fvta: Trar vf 42.
Svany: Cbfg
Treasures
You'll collect a digital Treasure from one of these collections when you find and log this geocache:

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