tkihira/Tombo.js — pull request #9 by hbono (2013-07-16 07:22:07+00:00)
Title: Composite images only when their colors are not white.

It seems Tombo initializes the color of a DisplayNode object with 0 (black) and composes a DisplayNode object when its color is not black. An application usually sets the colors of DisplayNode objects with white and it forces Tombo to compose almost all images. This change initializes the color with white and composes an image only when its color is not white.