Haha, right. A lot of sites hosted here are inspired by the 2000s to some degree, different eras, etc etc... I take your comparison to my site to Nitrome's works as a high compliment, I really like their UI design. I was planning to incooperate more graphical elements to my site too, actually. More pixely, more fun, y'know? By the way, I really like your site as well, really sleek.
I think the only color issue that jumps out is that your blue text accent color is way too light- it only has a contrast radio of 2.95, with 7 being the ideal minimum to meet AAA guidelines. #Darkening to 154EB7 fixes that. Here's a good contrast checker if you want to run some numbers: https://webaim.org/resources/contrastchecker/
Otherwise, your colors are unusually good. They're not painful or hard to read.