Colour blindness simulator
Like any responsible developer, I'd like to make sure that the sites I produce are accessible to the widest possible audience, and that includes the significant fraction of the population with some form of colour blindness. There are many websites which offer to filter a URL you feed it, either by rendering a picture or by filtering all content. However, both approaches seem to fail when rendering even moderately complex layouts, so I'd be interested in finding a client-side approach. The ideal solution would be a system filter over the whole screen that can be used to test any program. The