Maki Teshima’s “Botanical Stories” is a sculpture, technically, but it feels more like a three-dimensional painting. Visitors are invited to walk right inside of it. Installed at the small project space known as Understudy in downtown Denver, the work is, on its surface, quite simple. It consists of a few dozen panels of organza fabric, dyed in different colors and suspended like a wispy cloud from the ceiling. But the way that Maki structures the piece — as swoops and swishes of various hues layered over each other — is reminiscent of the way a painter applies different shades onto a canvas.