When I make change to an existing animation, such as colour of object, and press animation again, it won't animate. What am I missing?
I'm just learning blender 2.76.
In order for the changes you make to an object to be saved, you need to insert a keyframe on the property or whatever it is that you changed. To do this, in this case, mouse over the color field and press I.
Alternatively, you can open the graph editor, by selecting it from the dropdown that appears when you press thebutton on the bottom left corner of thewindow (in the default screen layout), and then edit the f-curves for the property you wish to change manually.
Shift
+Left Arrow
shortcut) ? See more info about animation shortcuts in related question $\endgroup$