Hmm, good idea.

I've been using the "Black on White" theme in Konsole, because that's the only real light theme it has, apart from Solarized.
Well, and apparently for some reason it uses brighter colors for what should be intense colors. Just setting the yellow to a normal yellow already improves it quite a bit.

I guess, my point still kind of stands, like why is there no better light theme included out of the box, but yeah, I should probably look into theming a bit more...