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Gimp Text Tool writing in Green Colour

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Gimp Text Tool writing in Green Colour
daiappy Offline
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Gimp version: 2.10
#1
01-27-2025, 12:37 PM
Can anyone help me here, please?  I can only get the Text Tool to write in a green colour, or black. It was all ok last time I used the text tool some weeks ago & I could get any colour from the pallette.   What am I doing wrong or has something changed?
I am using Gimp 2.10.38 on Windows 11. I have attached a file.
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Ofnuts Offline
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#2
01-27-2025, 12:44 PM
(01-27-2025, 12:37 PM)daiappy Wrote: Can anyone help me here, please?  I can only get the Text Tool to write in a green colour, or black. It was all ok last time I used the text tool some weeks ago & I could get any colour from the pallette.   What am I doing wrong or has something changed?
I am using Gimp 2.10.38 on Windows 11. I have attached a file.

No file attached.

  1. Check if you are in a color indexed image
  2. In your channels list, make sure all channels are selected (if what you get is pure green, it may be that the red and blue channels have been deselected).
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daiappy Offline
Junior Gimper
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Posts: 11
Threads: 6
Joined: Nov 2019
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Operating system(s):
  • Windows (Vista and later)

Gimp version: 2.10
#3
01-27-2025, 01:48 PM
(01-27-2025, 12:44 PM)Ofnuts Wrote:
(01-27-2025, 12:37 PM)daiappy Wrote: Can anyone help me here, please?  I can only get the Text Tool to write in a green colour, or black. It was all ok last time I used the text tool some weeks ago & I could get any colour from the pallette.   What am I doing wrong or has something changed?
I am using Gimp 2.10.38 on Windows 11. I have attached a file.

No file attached.

  1. Check if you are in a color indexed image
  2. In your channels list, make sure all channels are selected (if what you get is pure green, it may be that the red and blue channels have been deselected).

Rich - thanks. Very fast reply.  I'll look into the color indexed image. A bit to read & take in. 
The image came out of RawTherapee. The mode is in RGB and all the channels are selected.
Maybe  a setting changed in RT.
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daiappy Offline
Junior Gimper
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Posts: 11
Threads: 6
Joined: Nov 2019
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Operating system(s):
  • Windows (Vista and later)

Gimp version: 2.10
#4
Yesterday, 11:39 AM
Hi - friend of Daiappy here

From my limited testing this looks like it's a bug in the 2.10 series. Specifically I can reproduce it here with a 16bit int image and the RT Large colour space. When using 100% red, 0% green, 0% blue as the selected colour, I get green looking text in the image. Measuring the colour of the text using the colour picker shows the values:

R 0
G 65535
B 0

R -968.8%
G 109.4%
B -24.5%

So I'm guessing some combination of the large gamut profile and the 16 bit int precision is causing the issue. Indeed, converting the image from 16 bit int to float *or* converting the profile to Gimp's internal sRGB before adding the text "fixes" the issue.

I cannot reproduce this in Gimp 3 rc2. It works as expected there.
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