alternative
black
blue
bright
brilliant
bulb
cfb
cfl
change
climate
compact
conservation
ecofriendly
ecology
economical
economy
efficient
electricity
energy
environment
fluorescent
glowing
idea
illumination
indoors
innovation
kilowatt
light
lighting
modern
money
nobody
object
power
render
save
saving
science
single
smart
technology
tube
utility
vibrant
vignette
watt
wattage