Highlighter2 is a very simple, lightweight addon, that highlight any give word in any chat.

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-- About --
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Highlighter2 is a very simple, lightweight addon.
It will Highlight any give words in any chat text (i.e.. Guild, Party, LFG, General, Trade, Raid, ...).

If you add the word: healer
Then:
[4][LookingForGroup]: LF1M for hc AN. Need healer
Becomes:
[4][LookingForGroup]: LF1M for hc AN. Need <healer> (And in red(Default))

Or (with naxx as a word):
[Guild] [Player]: Anyone up for Naxx
Becomes:
[Guild] [Player]: Anyone up for <Naxx> (And in red(Default))

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-- Usage --
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I wanted to make the users interface as simple as possible.
No Minimap buttons, no scrolling frames, no nothing
So I just used the slash command.

Slash commands:
/hl2 : Shows slash help
/hl2 add [word] : Adds a word to watch
/hl2 remove {word] : Removes a word from the watch list
/hl2 options : Shows options
/hl2 clear : Clears the entire Word list
/hl2 list : Show words in Word list

/hl2 options bmark [mark] : Change the Beginner mark of the highlight
/hl2 options emark [mark] : Change the End mark of the highlight
/hl2 options color [color] : Change the color of the highlight

Examples:
Add the word Healer
/hl2 add Healer

Remove the word Healer
/hl2 remove Healer

Set the color to green
/hl2 options color green

Change the beginning mark to [
/hl2 options bmark [

Change the end mark to ]
/hl2 options bmark ]