1) for the first problem, yes damn problem; i have this difficulty: but easier to solve in your case (because i use a gradient effect for all the context-menu) i suggest the same answer as Spitzen: just use the same color for the bottom
2) for the "view" menu , the background is localized here: Lists, Menus & Tabs > Menu > PopUpBackground
it changes also the color of your all others menu (contex-menu etc)
just a example:
so just use the same color for all these parts