right click on color, choose, more cuolrs, custom colors andthen note down the number for REd, green, yellow (each color has three exact numbers to identify it).
In your new location, choose the same combination of numbers.
You can use the regular CTRL+F function to search for the word or you can copy-paste the text into a Word/Notepad document and use the search option there.
Not really. They can be 'designed' to elicit a certain reaction in an audience, but, if the audience is aware of how film-makers manipulate them, then they can avoid reacting predictably.