# Photoshop color table swap

**URL:** <https://boards.straightdope.com/t/photoshop-color-table-swap/287750>\
**Category:** Factual Questions\
**Created:** [February 1, 2005, 7:50am UTC](https://boards.straightdope.com/t/photoshop-color-table-swap/287750 "2005-02-01T07:50:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Alvis](https://avatars.discourse-cdn.com/v4/letter/a/c89c15/32.png) [@Alvis](https://boards.straightdope.com/u/Alvis)\
**Post date:** [February 1, 2005, 7:50am UTC](https://boards.straightdope.com/t/photoshop-color-table-swap/287750/1 "2005-02-01T07:50:19Z")

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I couldn’t find this in the forums or on Google, so here goes:

I have an image I’m turning into a tshirt. It’s a greyscale Photoshop composite that I’m outputting to PNG. Right now, it’s black image on a white background to be printed on a white shirt. I’d like to print on a green shirt with white graphics. Any idea how I can change the image’s color table from ranging from white-\>black to transparent-\>white?

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**Author:** ![Alvis](https://avatars.discourse-cdn.com/v4/letter/a/c89c15/32.png) [@Alvis](https://boards.straightdope.com/u/Alvis)\
**Post date:** [February 1, 2005, 7:54am UTC](https://boards.straightdope.com/t/photoshop-color-table-swap/287750/2 "2005-02-01T07:54:15Z")

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I should mention: I’m using Photoshop 5.0, so nothing new and fancy.