Is it possible to change the colour of vertex indicators in Blender? I have to select some vertices that are very close together with ones I do not wish to select and its quite hard to see them. I was wondering if the little black dots (which indicates a vertex) can be changed to luminous orange or blue or whatever colour other than black.

I'm hoping it is possible , but googling didn't really link me to stuff related to what I want.

(nb. I hope this makes sense and I've used the correct terms, Im still very new to modelling. If you don't know exactly what I mean I could probably paste some screenshots to illustrate it.)
Go to File -> User Preferences then in the Themes tab select "3D View" on the left side and change the color of "Vertex".