Re: [Gimp-user] Adjusting Colors But Not Whites

2012-06-29 Thread Ofnuts

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 
http://gimpforums.com/thread-proper-subject-extraction-background-removal-and-background-painting 
for an explanation of the magic.


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Re: [Gimp-user] Adjusting Colors But Not Whites

2012-06-29 Thread Liam R E Quin
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

-- 
Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
Pictures from old books: http://fromoldbooks.org/
Ankh: irc.sorcery.net irc.gnome.org freenode/#xml

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Re: [Gimp-user] Adjusting Colors But Not Whites

2012-06-29 Thread Frank Gore
On Fri, Jun 29, 2012 at 4:03 PM, Ofnuts ofn...@laposte.net wrote:
 - 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)

That worked perfectly, thank you.

--
Frank Gore
THE place to talk photography!
www.FriendlyPhotoZone.com
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