Change entire colour of image

[Ang999]

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!

[fluffybunny2]

(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!

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

[Ang999]

(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! :-)

[Ang999]

(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!

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 :-)