I am looking for a script that will do the old 'Twitch', ala Video co-pilot
https://www.videocopilot.net/products/twitch/
I am referring to the shaking text like at the beginning with the colour modulation.

This may be as close as you'll get.
MAYHEM - Sony Vegas Plug-In (http://vasst.com/store/sony-vegas-plug-ins/mayhem-sony-vegas-plug-in.aspx)
good luck.

You might look at the Motion Effects package at NewBlueFX.