How to change app drawer background (htc one m8)

I am thinking about getting the htc one m8, but when I tried it at the store, I noticed that the app drawer background was just black and there didn't seem to be an option to change the background. Is there a way to change it because I find it very boring and dull. Almost every other phone keeps the same background as the home screen, but for the htc one m8, it just gives you a black background.

Yea, apparently that's something you can do on a Sense Launcher. However, you can do this by downloading a custom third party launcher from the Play Store and setting it as your default launcher and then changing the background with that. Some good examples of third party launchers are Nova Launchers, Google Now launcher, themer etc.