hlinum

Extension for linum-mode to highlight current line number.

To use this package, add these lines to your .emacs file:
    (require 'hlinum)
    (hlinum-activate)
And by using M-x linum-mode, you can see line numbers
with highlighting current line number.

You can customize the color of highlighting current line by
changing `linum-highlight-face'.
By default, hlinum highlights current line only in the active buffer.
To highlight current line in all buffers, change
`linum-highlight-in-all-buffersp' to t.