Welcome Dan Williams, new LibreOffice Developer focusing on UI/UX - The Document Foundation Blog
(blog.documentfoundation.org)
Oh, so in a colorful toolbar, you are distracted by a single color? Sounds like an ADHD issue, and not a real world one. I have never seen or heard anyone but you say (Oh, I really can't work with this, I'm soooo distracted by the light blueish color that is behind the selected option)...
Here's a pro tip. You can change the color of the selected option in you menu. You can even chose different themes that changes that. I'm sorry to hear, that this is a dealbreaker for you. I surely hope that you'll stay away from LO or other free software, because you are too fragile to use them anyways.