rainbow

rainbow or rainbow is an esolang invented by User:None1. It uses text colored with the colors of the rainbow to do stuff.

Control Characters

Control pictures are converted to corresponding ASCII control characters when loading program.

Memory

The esolang is self-modifying, the only memory is the program itself. There's also a wrapping memory pointer and a wrapping pointer called the jump point.

Color points

Colors are mapped to numbers, called color points.

red: 0
orange: 1
yellow: 2
green: 3
cyan: 4
blue: 5
purple: 6

Color points wrap (incrementing purple gives red, and vice versa).

Commands

A command depends on the color of the character instead of the character itself.

red: increment the color point of current character
orange: move the memory pointer to the right
yellow: add the ASCII value of current character by the next
green: input the current character
cyan: output the current character
blue: increment the jump point if the current character has an odd ASCII value, otherwise decrement
purple: if the current character is not a null character, jump to the jump point

Characters that have other colors or don't have colors are NOPs.

Examples

Hello, World!

Hello, World!.............

Works by retrieving Hello, World from the source code,

Cat program

.GCP

Cheating Quine

QUINE␀

Doesn't output colors.