Pages v8.0 does not of its own accord, support find/replace of text color or fonts within a document. This can be achieved using the following simple AppleScript with the target document already opened in Pages. You would copy/paste the following AppleScript into Script Editor (Dock : Launchpad : Other : Script Editor), click compile, and then run:
set wordList to {"Buyer"} -- can be more than one word to receive the same color and font
set theFont to "Bodoni-BookItalic" -- postscript font name from Font Book
set theColor to (choose color default color {0, 0, 0})
tell application "Pages"
tell body text of front document
repeat with aword in wordList
set color of (words where it is aword) to theColor
set font of (words where it is aword) to theFont
end repeat
end tell
end tell
And after selecting a nice shade of green...
