Speaking as a technical person who also has considerable design experience, those initial colors you shared seem quite poor for anything but the most subtle of

Speaking as a technical person who also has considerable design experience, those initial colors you shared seem quite poor for anything but the most subtle of accent colors (perhaps a fanciful doodle on the side, or a very particular button in one place that's supposed to really pop). But as major colors in a branding guide/ site theme—yikes. Same with the blue. Way too saturated, RGB-style primary. Unless you're in a plastic toys for babies space, hmm. If you're indeed "the product guy" on the team I don't understand how your opinion can be so overtly overruled and devalued. I'd be truly steamed.