[PLUG-TALK] Changing color of an image with the GIMP

Denis Heidtmann denish at dslnorthwest.net
Mon Nov 17 02:25:02 UTC 2008


Richard C. Steffens wrote:
> I have a clip-art image I want to change from being black on white to 
> being orange on white. I've found all kinds of interesting color tools 
> in the GIMP, but I haven't found one that is connected to the DWIM (Do 
> What I Mean) button.  I've found some instructions on the web that say I 
> should play with the hue-saturation controls. But, when I go to that 
> panel, I get a message that tells me that hue-saturation only works on 
> RGB color layers. I get that message with a number of the color 
> controls. On other color controls I get a message that the control does 
> not work on indexed layers. The title bar of the image says it's 
> indexed, 1 layer.
> 
> This image may have started live as a bmp. I got it as a tif. I expect 
> to convert it to a gif or png.
> 
> Does anyone know how to identify a color in an image and then change 
> every instance of that color to another color?
> 

I think the clue may be "indexed layers".  I have not dealt with them, but I 
have the general impression that there are no gradations, just a collection of 
solid colors.  Maybe if you look for "indexed layers" in the help you will get 
some hints.

-Denis




More information about the PLUG-talk mailing list