# Tracing colours

**URL:** <https://forum.kirupa.com/t/tracing-colours/180212>\
**Category:** Uncategorized\
**Created:** [February 26, 2006, 10:48pm UTC](https://forum.kirupa.com/t/tracing-colours/180212 "2006-02-26T22:48:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![slideth3](https://avatars.discourse-cdn.com/v4/letter/s/22d042/32.png) [@slideth3](https://forum.kirupa.com/u/slideth3)\
**Post date:** [February 26, 2006, 10:48pm UTC](https://forum.kirupa.com/t/tracing-colours/180212/1 "2006-02-26T22:48:54Z")

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yo,

was just wondering how one would go about tracing a background colour.

for example if the background colour was 0x000000 have an object fall, if it is 0xFF0000 have it not fall.

was thinking of dividing the screen into a grid but I don’t know how to trace colours,

cheers, Sam