blue

colorimage

concept

copyspace

domesticenergy

efficiency

electricity

energy

energyefficiency

horizontal

house

idea

illuminating

illumination

illustration

illustrationandpainting

incandescent

lightbulb

nobody

old-fashioned

outline

power

residential

singleobject

solution

abode

answer

antiquated

antique

bulb

color

colour

drawing

dwelling

electric

force

graphic

graphicart

graphicdesign

home

housing

ideas

light

lodging

negativespace

nopeople

notion

outdated

outmoded

picture

powerful

residence

result

vintage

visualart

whitespace