How do you make name/cast text, class colored?

[Wilcoh]

how would you make the name/cast text, class colored?

[myrroddin]

local function ClassColouredName(name)
	if not name then return "|cffcccccc".. UNKNOWN.. "|r" end
	local _, class = UnitClass(name)
	if not class then return "|cffcccccc"..name.."|r" end
	local c = (CUSTOM_CLASS_COLORS or RAID_CLASS_COLORS)[class]
	return format("|cff%02x%02x%02x%s|r", c.r * 255, c.g * 255, c.b * 255, name)
end

You don't need to change the input variable name, although you could; once you have the unit's name via UnitName, just pass it to the function above.

To set the text colour, once you have the rgb values above, then use SetTextColour.

[Phanx]

@myrroddin:
Since Cataclysm the RAID_CLASS_COLORS table for each class has included a preformatted color string, so if you're using them inline in a font string, there's no need to construct your own color string from the r/g/b keys; just use the preformatted one from the "colorStr" key.

@Wilcoh:
I believe this was originally posted in an unrelated thread about LuaTexts, so I assume you to color something using LuaTexts, in which case it would be helpful if you posted whatever LuaTexts strings you're already using, but generally speaking:

function(unit)
	-- insert whatever code you already have,
	-- but instead of the "return" line, assign the text
	-- to a variable called "text", eg.
	local text = "Hello!"

	if UnitIsPlayer(unit) then
		local _, class = UnitClass(unit)
		local color = (CUSTOM_CLASS_COLORS or RAID_CLASS_COLORS)[class].colorStr
		return format("|c%s%s|r", color, text)
	else
		return text
	end
end

If you need more specific help, please post (a) which addon you are using and (b) what LuaTexts strings you are already using.