Kenneth is obviously a Spring. His beloved NBC page jacket is totally not his color - too cool, too faded, too dark - but here's a shot of him with a great Springy purple on underneath it.
not shadowed and haggard.
Perhaps the page jacket is that awful-for Kennth navy because that's actually what NBC pages wear?
Kenneth is a sympathetic character who's often presented as the moral center of the show. So it makes sense that his customary rainbow-colored tie features many great Spring colors. It brings some life and health to his face.
This was a tough one for me, but I'm going to go with True Spring over Light Spring for Kenneth. In this post, I identify some of the factors that distinguish Light Spring from True Spring. In Kenneth's (or rather, actor Jack McBrayer's) case, I notice that pale, delicate colors can seem a bit underwhelming on him, while stronger, deeper shades seem more balanced.
True Spring's colors are the closest of any season to the Crayola 8-pack. They are the stereotypical rainbow. Perhaps the NBC bikini Kenneth knitted is better for him than for his Nana.