Removing the gray border/rectangle in Visual studio 2012/2015

Question

I've changed the colors in Visual studio 2015 so that when I highlight a word , it colors declarations in yellow and references in green.

But for some reason - there is a gray border around the declarative part :

Question

Is there any way to remove the gray border ?

Edit

It seems that it happend also in earlier versions in another place - "Highlight current line" :

Here is the related question But I can't find the exact color setting to change (my question is not about current line but highlight reference).

Answer 1

You should just need to change the Item Foreground colour of the Highlighted Definition entry to match your default background colour and it will disappear.