gimp help
 

Hello,
suppose I have a grayscale image and I have to transform in a scale
of another color. How can I do? Here's an example: I have some
characters in the form of png image, with partial alpha and transparent
background. The glyphs are black, and I would like to transform
to blue, green, etc.. The only way I found is select by color and then
fill with another fg, but it is not the *best* result I think is
possible.
Thanks,
gaetano

Try image -> mode -> rgb
then colors -> colorize
is that what you wanted?

Let me explain better.
Suppose I do a new image with transparent background.
Then do a circular selection with anti-aliasing on and fill it with
black.

This is your start point.

You have to convert this circle to, for example, an orange circle
(or whatever color you want), maintaing the anti-aliasing.

Or to make things more complex, you have a grayscale image and
you want to make it sepia (without script-fu ;-) ) or give it
another tone of color..

How could you do?

With the circle still selected, do a bucket fill and select the color you want.