[Gimp-user] exchange color range to change tint

[rich404 <forums gimpusers com>]

> I'd like to create colorful crystal ball images identical to these,
> but using different colors:
> http://www.psdgraphics.com/graphics/colorful-3d-crystal-balls/
> (also got one attached here)
>
> I spent a few hours wrestling with Colors > Map > Color Exchange, but
> not having any luck.  I've tried sampling a number of different
> locations as the "from color", and many different values in the "to
> color".  Then with "lock threshold" checked I drag the thresholds up
> until everything in the image is selected to exchange.  The results
> are consistently pretty ugly, not the nice even gradients in the
> source files with plausible shades, reflections, etc..  They look
> white-ed out, splotchy, ...a little hard to describe.
>
> Any suggestions on how I might better manage a smooth exchange to new
> color neighborhoods?

You could try:

Desaturate the original image (using luminosity) 

Add a coloured layer on top

Change the layer mode to overlay

rich: www.gimp-forum.net

Attachments:
* http://www.gimpusers.com/system/attachments/771/original/overlaymode.jpg

-- 
rich404 (via www.gimpusers.com/forums)