VIM initial settings: change background color for line number on the left side?

Question

I use _vimrc to configure my vim 7.2 (windows) default settings. One setting \"set number\" will display line numbers on the left side. My vim background color is w

Answer 1

In my _vimrc, here is the setting:

highlight LineNr guibg=grey

or

hi LineNr guibg=grey

I don't need to set fore-color, the default is yellow and it is OK for me.