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Change entire colour of image

Mar 11, 2014, 20:52
Post: #1
Change entire colour of image
I have an image from Shutterstock of the Eiffel Tower, its a pencil drawing all in black and I have just put it on a transparent background.

I need to make the drawing all white so I can place it over another image.

I have tried watching tutorial videos but they all use the Colour>Map>Rotate Colours option - which is never highlighted as an option.

Can anyone help, I am under pressure and have a headache from trying to figure it out!

Thank you in advance!

Huh
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Mar 11, 2014, 22:36
Post: #2
RE: Change entire colour of image
(Mar 11, 2014 20:52)Ang999 Wrote:  I have an image from Shutterstock of the Eiffel Tower, its a pencil drawing all in black and I have just put it on a transparent background.

I need to make the drawing all white so I can place it over another image.

I have tried watching tutorial videos but they all use the Colour>Map>Rotate Colours option - which is never highlighted as an option.

Can anyone help, I am under pressure and have a headache from trying to figure it out!

Thank you in advance!

Huh
Since you say it is a simple change from Black to White...
Colors->Invert
Might do the trick too.
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Mar 12, 2014, 05:42
Post: #3
RE: Change entire colour of image
(Mar 11, 2014 21:20)ofnuts Wrote:  Colour>Map>Rotate Colours is only available in RGB mode. If you image is grayscale or color-indexed it won't work (Image>Mode>RGB to fix this).

But if you have the lines over a transparent background, then there is a very easy solution (RGB or grayscale image):

- lock the alpha channel of the layer (this is the small checkerboard icon in the Layers list, just under the opacity slider)
- bucket-fill the layer with the required color. The alpha-lock preserves the transparency of the pixels.

Oh my goodness - that was so simple! I have no idea why or what I actually just did, but it worked and for that I am eternally grateful! Thank you so much! :-)
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Mar 12, 2014, 05:44
Post: #4
RE: Change entire colour of image
(Mar 11, 2014 22:36)fluffybunny2 Wrote:  
(Mar 11, 2014 20:52)Ang999 Wrote:  I have an image from Shutterstock of the Eiffel Tower, its a pencil drawing all in black and I have just put it on a transparent background.

I need to make the drawing all white so I can place it over another image.

I have tried watching tutorial videos but they all use the Colour>Map>Rotate Colours option - which is never highlighted as an option.

Can anyone help, I am under pressure and have a headache from trying to figure it out!

Thank you in advance!

Huh
Since you say it is a simple change from Black to White...
Colors->Invert
Might do the trick too.

Thank you for replying, I might try this one too :-)
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