Throttle and Kickdown linkage return springs?

Hello,
I've searched the web to purchase 1970 Dodge Challenger throttle and 727 automatic transmission kick down linkage return springs and see that there are a lot of choices. There is discussion on what color springs to use as well. Everything from white to red to green and even unpainted steel. I'm running a small block with a four barrel carburetor and mechanical transmission kick down linkages. I'm looking for vendors and part numbers to order both springs if possible.

Thanks...

Throttle and Kickdown linkage return springs?