Extract an enhancement from one weapon and apply it to another

After completing the "the padawan exposed" mission with my sith juggernaut character, I have to choose between two rewards, one of them is called "dread sith savage lightsaber", in orange text.

I am tempted to choose this reward because it offers the following benefits over my purple "vindicator's lightsaber":

+51 Max Damage
+31 Min Damage
+8 Strength
-4 Endurance
+68 Power
+25 Force Power
-10 Defence Rating

The higher modification on my "vindicator's lightsaber" is the "enhancement" modification which is 72 as opposed to 70 on the other weapon.

I am going to choose the "dread sith savage lightsaber" because I think it will do more damage, is it possible to extract the benefits of this weapon and apply them to my previous weapon, whilst retaining the benefits of that weapon? Or can I take the enhancement from my previous weapon and add it to my new one? After double checking it seems that my new weapon has much better stats, but the enhancement is lower, so I would want to take the enchancement from my previous weapon and apply it to my new weapon.

What difference does it make if one is purple text and the other orange, which is better?