Heh... that was great, thanks for your playthrough, dude.
I was on the edge of my seat at the end there... will he get it!!? So...
Spoiler: if you want to know why color 8 and 2 are blue: Yellow is the first color the sun can be, blue is the LAST color you can switch the sun to (and 2 is the same as the last). You also missed WHY III is yellow, but got it anyway... (check out the shadow from the top)