The highlight color on site navigation panel is a grey which is very, very close to white, and it is almost impossible to notice the difference. When you first click a page on site navigation panel, the color is a strong blue, no problem with that. But when you go back to work on the page, the blue highlight color is gone, replaced with this very light grey. This makes it so hard when you have to make a change on every single page on the website and have to navigate all pages one by one. I really have to focus to see which page i am on. A grey just a little bit dark would be great. This issue is apparent since version 11.