I transplanted my avocado tree outdoors, and after a month of transplanting it, I see a strange (non normal) development. It seems that the new leaves are growing shrinked (see the photo). Also those leaves have some red color on it (don't know if it is normal but it didn't happen before). The major change it has suffered is more exposure of sun, so I think maybe is that, but I really don't know. Any help is appreciated, thanks!
EDIT (more information):
Note that another thing that has changed is temperature. Now is more inestable, some days reached 10ºC at night.
Here is the pick of the leaf that is older than the previous one that is starting to suffering some issues too, maybe it can gives more detailed hints on what is happening.