After printing the Minecraft L*EGO brick nether portal I decided to make a Hueforge 3D printed insert instead of printing something off since I didn't have a colored paper printer anyway. 

I found an image online and used Hueforge to add the colors by layers. I sized it to fit the specific portal and there you go!

Color Changes

• Start with Black
• Layer 3 change to a Dark Purple (Purple MatterHackers Build Series)
• Layer 5 change to a Light Purple (Inland)

I used pretty much the basic .08mm Extra Fine settings and then Ironing on all top layers.