You find yourself trapped in a room with three painted doors; one yellow, one purple, one black. You know that only one leads out to safety while the others lead to your doom. You find a note. On it is written
Being as obsessed as you are with riddles, ciphers and numbers, you are now confident which door to take. Which door is it?
Here is a more readable copy with some hintful puctuation:
"Last name" is the clue
A hint: from me to you
Once you're upon my name
A pattern I planned out
Will help you to get out
Now enjoy the game
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