[SPRITE] Minor Energy Gun Sprite Consistency Change

Changes the Energy Gun's Disable sprites to use the same colour style as the Advance Taser uses when the gun is set to Disable.

In game image below.

![screenshot 2014-12-31 01 41 04](https://cloud.githubusercontent.com/assets/6595389/5581038/676f7d10-908e-11e4-9c4a-4114a42ce96c.png)

In addition, the old Stun sprites are kept in the files in case they are used in the future.