Highlight Navigation depending on current category or template?

I’m having a minor issue though. I have a “Blog” section and a “Video” section. The video section is essentially a blog page that on shows posts with the category “video”. The problem is when I click on one of the videos the navigation takes me to the /archives/ or a single.php page which then triggers the blog section to highlight in the navigation. As of now my navigation is generated using a plugin, so I don’t have much choice in the code it spits out. Is there an easy way just to keep it navigating from the videos section to the blog section on clicking on the related videos? I’m still a little confused about the single pages, but I’m using a category filter to change the look of the single page for the video section, but I’m at a loss on how to change the main navigation to highlight the video section when looking at videos. Any ideas?