[litnin]

Yes, all you have to do is go to the auto parts store and buy a replacement
dual contact socket (1157 type or equivalent).
It takes a little work and some hot glue to fit the socket in,
but it is a fairly easy process and a whole lot cheaper than buying
a module to do it.

Also, the red lenses are required in most states.
It is not a federal law that you can't have amber in the back.
However, most all states have a requirement of rear running lights be red.
Not all states have this law, so I would check the official motor vehicle code
for your state to find out if your state does or not.