Emacs, How to change some colors in M-x shell?

Question

I use Emacs 24 and want to change a color of dirs and files while I\'m in shell-mode (ls command). Ideally - depending on rights of the file.

How can i

Answer 1

M-x customize-variable RET ansi-color-names-vector RET

Existing text will not have been affected, but newly printed text (even in the same shell buffer) will show the new colors.