Technicolor Dream

Technicolor Dream is a raster graphics program for Atari 8-bit computers. Its native 256-color image format consists of a pair of files: .lum and .col.

In the absence of a .col file, a .lum file could be displayed as 16-color grayscale.

Identification
.lum files begin with byte 04.

Both .lum and .col files appear to be exactly 4766 bytes long.

Software

 * Konvertor
 * RECOIL
 * Rest7 Online Image Converter

Sample files

 * https://telparia.com/fileFormatSamples/image/technicolorDream/

Links

 * , from the Atari 8-bit Forever website