Below, from the nVeil library of built-in veils shown here colored by random source images, with some of nVeil's visual effects randomly applied. Choose or create source images to display colors where you want them. Try composing colors with a live webcam or iSight camera. Easily create your own veils: start with a drawing made in any vector editor, process the SVG file in the Veilmaker app (included), add to the Veil Library, and display in nVeil; modify visual effect settings with controls.
The following library gallery shows a selection of available veils filtering random source images with a variety of effect settings: