838. Climber (Germany)

This Climber was released in 2018 as a part of dedicated run, which includes few Climber models, but with different prints on scales. Each scale represented a different flag of several countries.
My variation is belongs to Germany and it has an identifier ‘55084.BRY‘ (it was released for US market). I couldn’t understand meaning these letters (BRY) for a while.
Do you have any ideas what these letters can means? The answer is below, after pictures, so don’t scroll very fast…
Photos:
Correct answer id: Black, Red, Yellow 🙂

Related models:

  • Tinker Super
  • Climber Small