Re: [Gimp-user] Brush painting in wrong colour?

[Ofnuts <ofnuts gmx com>]

On 08/01/17 15:40, Rick Strong wrote:
> What rich2005 says.
>
> Or, SELECT > BY COLOR, click on the red and fill with your green using 
> the bucket.

No, because this will not select the border pixels and you keep a faint 
red rim. Only two good methods here:

1) Rich's Rotate colors (which works because we are on a white 
background so the edge pixels are mostly a desaturated version of the 
others, but the output color must be about as saturated as the input one)

2) Color replacement (in full RGB mode):

- Layer>Transparency>Add alpha channel
- Color>Color-to-alpha and remove the red (this replaces the logo with 
transparency)
- Set the bucket-fill tool to "Behind" mode and bucket-fill the whole 
layer (no selection!) with the required color