I wouldn't say the colliders are messed up, exactly. :) Just that it's not inherently obvious that objects aren't defined by the white space around them. For example here:
The collider extends to about the red line, which is totally fine, but I was expecting it to extend further.
Or with the lady bugs:
The raised white area gives the impression that the player might be landing on an uneven surface, but it's actually a flat platform.
Again, not at all a big deal but something I noticed and wanted to mention.