I want to let my colleagues pull changes from my local repository

You can do this on a temporary basis using EasyMercurial, for occasional ad-hoc transfers:

1. In EasyMercurial on your computer, go to File -> Share Repository and make a note of the URL shown in the window that is opened

2. In EasyMercurial on your colleague's computer, either open a new empty folder, or reopen a repository that has been pulled from your repository in the past

3. Go to Remote -> Set Remote Location on your colleague's computer and enter the URL you made a note of in the first step

4. Click Pull in the main toolbar on your colleague's EasyMercurial program.

There are various ways to set this relationship on a less temporary footing if you have shared access to your local folder, through network filesystems or via remote login to the computer you are using. Configuring this is outside the scope of this help document.