There's not really much to talk about in Colonius, is there? Have some thoughts, though:

• Seekers behave rather differently in 1.00g than they do in the final; you don't really show this off much, but the important point is that they're not at all "slow" as you call them. Once they find an enemy, they're there in no time.
• You missed a gold coin in Victorian Secret. (Some coins in Colonial Chaos, too, but Victorian Secret you said you knew the location of every coin in, so that's more egregious.)
• You mention where the Victorian Secret demo stops; that's only accurate for the final, and you're talking about 1.00g, so that's not important. 1.00g has its own unique set of demos.
• (The seeker block on the house roof in the final is missing entirely, due to a mistake on the level designer's part. You can still fall into that little hole.)