Visual mimicries of natural environments lead us to reconsider the role of the technological natural environment, which is able to simulate the effects of being close to the wilderness. If the purpose of nature’s colors in the current lightings is giving an impression of being near the wilderness, then creating a feeling of being close to nature without showing the actual colors of either real sky or synthetic light-color is worth study. 'Shadow of stars' that the author is currently prototyping, proposes a feeling of being close to wilderness in daily indoor spaces through the variation of the brightness, rather than create a scene of being in nature. By applying the importance of a feeling of being close to the natural environment, the author proposes that light fixtures in indoors should not only reflect the value of visual experiences, but should also highlight the value of generating a feeling of being in nature.