Page naming and php wp_list_pages

I’m currently using php wp_list_pages to output my pages for my navigation bar.

I’ve created specific section pages such as:

Yellow | Blue | Green | Brown

When adding to text to the “Yellow” pages for example i’d also like to extend on the name of the page to something like:

“Yellow – What a great color”

But when i edit the page to include the text it also includes the exact phrase in my navigation output. Which makes it look like:

Yellow – What a great color | Blue | Green | Brown

Does anyone know of any way i can set a specific name for the page – yet edit the pages title to include additional text?