On 06/29/2012 09:44 PM, Frank Gore wrote:

I have a set of icons which are a specific color (blue) with white text on them. I want to change them to be a different color (turquoise) and a fair bit darker, but I want the text to remain white. When I use Colors -> Hue-Saturation, I can get the desired color I want, but the text ends up looking grey because I need to bring down the lightness slider to achieve the color I want. Is there a better way to accomplish the task I need without affecting the white?

- make sure you have an alpha channel - use Colors/Color to alpha to make the white completely transparent - insert a white layer below: you now have the same icon but split on two layers
- select the layer with the remaining blue icon - at top of the layer list, check the alpha-lock box:painting on the layer will not change the transparency of the pixels. - paint that layer in any color you wish (you can even bucket-fill the whole layer)

It's really simpler than it looks, and the result will be about perfect.

See
for an explanation of the magic.

On Fri, 2012-06-29 at 15:44 -0400, Frank Gore wrote:

I have a set of icons which are a specific color (blue) with white text on them. I want to change them to be a different color (turquoise) and a fair bit darker, but I want the text to remain white.

First, best is to keep the text as a text layer if it's not too late, and to work on the blue layer separately.

Second, colours->map has rotate colours, and that combined with using curves to make the image darger without moving the white point, is pretty easy and doesn't involve making new layers.

Liam