Hey buddy. Your original transitions.ini file is in /usr/share/hildon-desktop. If you replace this one with any modified one, you will have modified transitions for any theme you choose. The only thing is the performance will vary from theme to theme. If you only want to modify the transitions of a specific theme, then you need to go into your theme folder and edit the transitions.ini file in /opt/usr/share/themes/YOUR THEME (which is the name of the theme you are using. Keep in mind though that if you do that, every time your theme has an update, you will need to go there afterward and re-edit the transitions.ini file. Hope this helps! EDIT: text removed. Corrected by D-Iivil below.