vaf0r

Hi i am a noob Prestashop user i have found some great themes/templates to version 1.2 but also 1.3 problem is that i cant test the script yet (witing for hosting to be active) can any one tell me what will happen if i upload a 1.2, 1.3, or 1.3.1 theme on a 1.3.2 version? And what will happen once 1.4 is out if i now pick a older theme? Hope someone understand my poor english and i know it might be a stupid question i would not have ask it if i the hosting was working.