A resort for retired goldhunters

[SandyBean]

OK...... It  must just be me, since no one else has mentioned this issue, and it seems there is lots to mention.

I cannot for the life of me figure out how to get the multi-colored key in room 13500 on the far right corner.  I have tried jumping off of everything in sight, moving or not, climbing, going down, NOTHING IS WORKING !!!  PLEASE HELP  

I want to do the purple section first to have the backpack (that's the easy part), but see that I cannot go much further up without this key.

thanks,
Sandybean