Command Colors

I'm making a simple shell script and would like to highlight certain words with colors. I thought there was a way to do this using syntax commands but I can't seem to find anything. Does anyone know where they are or what they are?

[Tor]

I found this cool little function that may help you:

initializeANSI()
{
  esc=""

  blackf="${esc}[30m";   redf="${esc}[31m";    greenf="${esc}[32m"
  yellowf="${esc}[33m"   bluef="${esc}[34m";   purplef="${esc}[35m"
  cyanf="${esc}[36m";    whitef="${esc}[37m"
  
  blackb="${esc}[40m";   redb="${esc}[41m";    greenb="${esc}[42m"
  yellowb="${esc}[43m"   blueb="${esc}[44m";   purpleb="${esc}[45m"
  cyanb="${esc}[46m";    whiteb="${esc}[47m"

  boldon="${esc}[1m";    boldoff="${esc}[22m"
  italicson="${esc}[3m"; italicsoff="${esc}[23m"
  ulon="${esc}[4m";      uloff="${esc}[24m"
  invon="${esc}[7m";     invoff="${esc}[27m"

  reset="${esc}[0m"

}