Back in September we showed you this jaw-dropping colorized photo of 29 famous scientists. Now, thanks to the work of 18-year-old artist Mars Madsen, we have some more, including the reworking of black-and-white photos of some famous historical figures and scientists.

It's truly amazing how much life a bit of color can add to a photograph. Black-and-white photos are all fine and well, but the low spectral bandwidth can be quite disengaging at times; color photos simply look more real.

Check out some of our favorites:

Albert Einstein

Charles Darwin

Butch Cassidy and the Wild Bunch

According to Twisted Sifter, it takes Madsen about 20 to 30 minutes for a portrait, but outdoor shots and images with lots of people and background take much longer. A Civil War buff, he has amassed a portfolio of over 450 images, many of which can be seen at Check out this video tutorial to see how he does it.

Here are some more:

Abraham Lincoln

Albert Einstein

Winston Churchill

Charlie Chaplin

Frederick Douglas

Mark Twain

Migrant Mother