LED Bulbs: Efficient lighting is here to stay..... - The introduction of LED light bulbs into the market has been hindered due to several factors. Namely: lumens (brightness) color (led produce blue radiance vs. white) market promotion and affordability. Although LED bulbs for residential and commercial applications are not quite where they need to be, they are starting to scratch their way into the market this year with more force than ever before. [ENN Green Building]