On the plus side, your site is friendly in reader view.
• Never justify text in digital • Never right align long form in digital • Both need to learn balance between type size and line height
My point being that applying rules learnt from hundreds of years of literary culture and printing do not 1:1 translate into digital.
Justified copy is as much about saving paper as it is about any formality/legibility. It really has no place in long form digital space where space is infinite.
Type designers like consistent and even rhythm between the ink and page. Rivers of white and large gaps between words give the ick.
To me, colors are important. I'm a visual artist. The minimal amount of colors to me is an additional two to your two. It's not arbitrary, I didn't just go crazy with colors, I settled on exactly four because I couldn't reduce it to three.
This is a fundamental misunderstanding of what minimalistic design means.
If you've identified that you need a website, minimalism would be paring that down to the core essentials and ensuring it has everything it needs, but nothing more, to suit its purpose.
Websites exist to serve content. The author of this page demanded it have a background image.
Here's another page that doesn't:
That's a design element that serves the functionality well and doesn't feel superfluous at all. But the image on the colophon page I'm less excited about. It gets in the way and feels unnecessary.
That's a lot to you? It's very few to me.