RGB art is a method of combining images in separate color channels. Those can be decoded with color filters or in my case- special filter camera app.

Use RGB Camera app to decode the image.

Pick up to three files to combine into RGB art. If a channel is left without a file, it will be replaced with a white canvas. Sum of all images should be less than 15 mb. All images will be resized to one size (priority to R, then G and B).