With growing interests on tangible media and physical computing, video tracking become one of the most essential technologies in the design field. It transforms a simple PC camera to be a powerful sensing device while implementing new interactive media. But for designers without technical background, it is difficult to use the video tracking feature in their design process. This paper presents an easy and designer-friendly video tracking toolkit that can be used in Macromedia Flash, which is the most favourite multimedia authoring tool for designers. By using the toolkit, designers and artists using Flash can simply display video images, track specific colors, and detect motion changes with standard digital video capturing devices like USB webcams.