Ram-bow is an achievement that requires the player to have the four different seasonal rams (not ewes) in a pen at the same time. Black rams, Golden rams and White rams do not count towards this achievement. It appears that a seasonal ram which is shiny (e.g. a Summerdown ram which is shiny) qualifies as its normal form.
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- The achievement's name could be a pun on the word rainbow, referencing the rams' multiple colours.
- The achievement's name could be a reference to the movie franchise Rambo and its lead character.