Syntax Highlighting with nano - nanorc for patch

From NAS-Tweaks

## Here is an example for patch files.
##
syntax "patch" "\.(patch|diff)$"
color brightgreen "^\+.*"
color green "^\+\+\+.*"
color brightblue "^ .*"
color brightred "^-.*"
color red "^---.*"
color brightyellow "^@@.*"
color magenta "^diff.*"