OE working style

[Javi Roman]

Hi everybody.

I'm building a custom OE image by means of local overlay technique, so
I'm faced with a dilemma: I have to modify any rootfs files within the
final image, such as /etc/xorg.conf, /etc/profile, and many others. I
wonder which is the correct way to personalize those files: have I
modify the original bitbake packages (be means patchs in the local
overlay)?

Please, can anybody advice me about the most habitual behaviour?

Thank you.

-- 
Javi Roman