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# Factorio Prototype Docs Version 2.0.7

## RailSignalColorToFrameIndex :: struct

## Properties

- default
- sorted

none optional | :: uint8 |
red optional | :: uint8 |
green optional | :: uint8 |
blue optional | :: uint8 |
yellow optional | :: uint8 |

blue optional | :: uint8 |
green optional | :: uint8 |
none optional | :: uint8 |
red optional | :: uint8 |
yellow optional | :: uint8 |

## Properties

### none :: uint8 optional

Default: `0`

### red :: uint8 optional

Default: `0`

### green :: uint8 optional

Default: `0`

### blue :: uint8 optional

Default: `0`

### yellow :: uint8 optional

Default: `0`

Type used in

- RailSignalPictureSet::signal_color_to_structure_frame_index