At first it's easy to consider it one of those "healing" animus, the light colors and slow delivery of jokes that don't close with a tsukkomi punching and screaming tend to be common in those comedies. But in Tanaka is a 4koma comedy. There is little development, there aren't particularly emotive moments and there is nothing to get from it.
The most evident moment when this saturation becomes evident is in the cut to the opening and eyecatches. After the joke the screen slowly fades to white, taking three or four seconds to eventually disappear. There is no loud noise or strong cut, just moving with ease to the next place. Or usually the same one moments later without any change.
The color pallete doesn't have full saturation, the music is something the MC from Detroit Metal City would love, and even the angry tsukkomi characters are quitely revengful instead of reactive. There is no opposition, in the plot or in the looks. It's impressive how a vague concept as being lazy is turned into visual and auditive metaphors all the time.
This anime feels like an incredible excercise in expressing feelings through animation. But obviously if the comedy doesn't work for you there is no point in caring too much. I'd say you're not supposed to care too much about anything to enjoy this anime.
