I have changed the purpose of the album Color. So far, it hosted "only" the album Studies with colored pencils. But I've reconsidered that: I thought it would be a good idea to make Color a collector for all my studies about the subject "color". By doing so, I recently added the series Building New Universes (March 2014). This is a study with a mixture of water and oil, playing with different lighting and color schemes - you can read more about that here.
Whenever creativity arises in my mind, I will add new suitable project there.