the menu items at the top of sublime 2 take the background color from the windows MENU color 1, and it's been there since i first downloaded sublime 4 updates ago. I don't normally have it purple, i just wanted to see if it was that setting that was applying the menu text background color. I didn't see a place to submit this, so i figured here was good enough.
Taking the background color from here:
Oh, and when you hover over it, it will change the outer background color, when you hover or click a menu item, the box around that specific menu item(bigger than in the picture) takes the background color, so it's not just the text background color, but the box around the text that you don't see until you hover or click on a menu item.