Yup, the colors are jarring. The contrast is very poor. My eyes hurt! I guess the UI isn't that bad, but the blue boxes with white text need to be replaced.

On the plus side, it's responsive, so there's that I suppose.

The thing that bothers me most is that near the top, the header title isn't aligned with the first section title. Not so much a design thing I guess, so much as it's just something that makes my eye twitch ...