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Changing the color of a PNG image

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Changing the color of a PNG image GARNIER Jean-Luc 30 Apr 15:34
Changing the color of a PNG image matt1027 30 Apr 15:55
Changing the color of a PNG image GARNIER Jean-Luc 02 May 08:23
GARNIER Jean-Luc
2007-04-30 15:34:06 UTC (over 17 years ago)

Changing the color of a PNG image

Hi all!

I'm pretty new with GIMP (installed 3 hours ago) and have already one question: how can I change the color of a PNG image? The context: - I have a piece of javascript code that draws pretty boxes on an HTML page
- this piece of code uses PNG images as backgrounds for the different corners (and boxes body)
- the example I downloaded uses black image components (see attached)
- I'd like to be able to match my association's logo and have a yellow background for our web site's boxes, migrating from (black and gray) images to (yellow and light yellow) images
I've tinkered with the color map rotation function but to no avail. Is there any issue with PNG images ? Or with layers ? What is the standard procedure to change colors on a simple image ?
Thanks in advance for helping a 0%-artist / 100% technician ! ;-)

Cordialement / Best regards,

Jean-Luc GARNIER

matt1027
2007-04-30 15:55:49 UTC (over 17 years ago)

Changing the color of a PNG image

At 09:34 AM 4/30/2007, you wrote:

I'm pretty new with GIMP (installed 3 hours ago) and have already one question: how can I change the color of a PNG image?

I've tinkered with the color map rotation function but to no avail. Is there any issue with PNG images ? Or with layers ? What is the standard procedure to change colors on a simple image ?

Did you select an area of the image or the whole image before you applied the color map rotation function?

Matt

GARNIER Jean-Luc
2007-05-02 08:23:00 UTC (over 17 years ago)

Changing the color of a PNG image

Hi Matt!

Did you select an area of the image or the whole image before you

applied the color map rotation function?
I've selected the whole image... Does it do any difference? Anyway, the preview doesn't display any change while I'm playing with the color sectors or the grey levels... :-(

Thanks for your helo,

Cordialement / Best regards,

Jean-Luc GARNIER