How to remove password requests? and others

[marcio.de-almeida]

Good night, itś my first post here,
great distro , very good work!!!!

but I have some doubts

1 - How to remove password requests?
I just need a password to enter my pc

2 - how to leave the numlock on from the beginning?

3 - How to change the color of windows?

For now, just thank you !!!!!!!!