Welcome Geoff, As far as the flickering on and off. Yes the resistors trick is for this problem along with others. Basically in a nutshell its one resistor per low beam and one per high beam. All your doing is tricking the truck/car computer as to thinking there is a a good working 50/55 watt bulb in place.
The green tint I'm not sure, maybe if the bulbs have been touched your oils on the bulb is causing it to act up, be careful they could blow up with your oils burning on the bulb.
If you want to just buy them pre made check this site out. I thought I posted this on the first page but anyways.
http://www.carhidkits.com/wiring-ada...-pack-378.html
Again welcome and hope to see some pics of your ride!