(Hopefully, my suggestion does not count as bikeshedding).
I do think, nopCommerce is an awesome product with awesome features.
Still, the nopcommerce.com website IMHO has a very unattractive color scheme.
All those, dark, "washy" blue-gray colors makes this look very serious, boring, old. (Even the font color of normal text is a very bright, shy gray that is hard to read).
This is totally in contrast to the actual modern, brilliant technology and the feature-rich product.
Taking a look at e.g. "Shopware" (some popular shop product here in Germany), they have fresh, light, modern, friendly colors, making the whole product look much more attractive.
My suggestion:
Please change your color scheme to something more attractive and friendly.
Mockup:
Although I'm no designer at all, I've quickly assembled some mockup to give an idea:
- This is the original current nopCommerce website: i.imgur.com/r6WzArY.png
- This is my mockup: i.imgur.com/Dcw1edN.png
(I've adjusted logo color, header color, button color, body text color).
