Summary

This large lamp required nearly a full reel of PLA filament; it printed in 78 1/4 hours using a print speed of 90 mm/sec and a 0.200 mm layer height. I thought I had enough blue filament on the reel (it was nearly full) but I was off by a small amount so I finished the print with gold.

This design is a larger version of https://www.thingiverse.com/thing:4239736. I made it larger so more light would get up to the top of the lamp. This lamp is designed to hold any one of several LED lights called "puck" lights. You can get these powered by either batteries of wall power. This blog page has links for wall powered lights that work well:
http://birkbinnard.com/blog/wall-powered-led-lights/. For many more options just Google "led puck lights."