I did it two and a half years ago, and don't recall it at all. But... I did write down this from my ascent: "Very sequency. I'll note that a grey alien was helpful for the last small crack under the roof."
Grey is between yellow and red, or a little smaller than the .5 purple camalot.
Don't know if that's helpful, or if it's even true, but it's what I thought at the time.
Cheers,
GO