Edit: /usr/share/nano/pov.nanorc (682B)
## Here is an example for POV-Ray.
##
syntax "pov" "\.(pov|POV|povray|POVRAY)$"
color brightcyan "^[[:space:]]*#[[:space:]]*(declare)"
color brightyellow "\<(sphere|cylinder|translate|matrix|rotate|scale)\>"
color brightyellow "\<(orthographic|location|up|right|direction|clipped_by)\>"
color brightyellow "\<(fog_type|fog_offset|fog_alt|rgb|distance|transform)\>"
color brightred "^\<(texture)\>"
color brightred "\<(light_source|background)\>"
color brightred "\<(fog|object|camera)\>"
color green "(\{|\}|\(|\)|\;|\]|\[|`|\\|\$|<|>|!|=|&|\|)"
color brightmagenta "\<(union|group|subgroup)\>"
## Comment highlighting
color brightblue "//.*"
color brightblue start="/\*" end="\*/"