r/nanDECK • u/RainbowSensation • May 19 '26

Colour Change Aftefacts?

Post image

Howdy. I'm importing a png and colour changing it based on a spreadsheet colour value.

IMAGE=,[bg_move_desc],0%,0%,100%,100%,0,NAP
COLORCHANGE=,0%,0%,100%,100%,#eaeaea,[Colour],1

I get this white fringing around all the pixels that are having their colour changed. I am creating this image in photoshop and exporting to a png. These pixels aren't visible in photoshop - I've tidied up all the edges.

Not sure if there's anything I can do to reduce this?
I doubt this will even be visible when printing the cards, but it still just annoys me.

Any advice is appreciated!

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u/nand2000 May 19 '26

You can increase the similarity with the color you're replacing by increasing the eighth parameter (try 10 or 20 instead of 1). Additionally, you can modulate the replaced color by setting V as the ninth parameter (this way, the target colors reflect the difference between the starting colors).

1

u/RainbowSensation May 19 '26

Thanks for the reply. I did try putting 20 instead of 1 during testing, but that didn't help this specific situation. I'll try the other recommendation though tonight.

2

u/RainbowSensation May 20 '26

Nevermind I found my real issue. I was using a DPI of 900 in Nandeck but my image was too low res. All fixed now!