tomatoes radiate a rich red (so much for alliterations), but we
want them to turn blue instead.
simplest solution is to click Image/Adjustments/Replace Color.
The appearing dialog will look like this:
take a look at the settings.
Fuzziness can be set from 0 to 200 and controls
which areas the color replacement will be applied to. The effect
can be tracked on the preview image below. If you have Selection
selected, the picture shows a black-and-white mask. Only white areas
will be affected by the color change. If you have selected Image,
you see the original picture. Choose Selection.
can select the color you want to replace with an eyedropper tool.
Click the desired color in the original image to select it. You
can see the result on the preview picture: the color replacement
will affect the areas that are now white. Set Fuzziness to
a higher value if you want to include more areas in the change.
You can also select the eyedropper marked with a + sign on the right
side of the dialog. Clicking it on the original image will add more
hues or new colors to the selection. Likewise, the eyedropper marked
with a - sign will remove colors from the selection, thus reducing
the selected area.
can see three sliders and a color field under Transform.
Hue specifies the color that will replace the original one
you have selected. This color is shown in the field to the right.
Saturation controls the strength of the color, while Lightness
sets its lightness. The effects of these sliders can also be easily
observed in the color field.
want to replace the red tomato color with a blue, so first of all,
click the red surface with the eyedropper.
the image doesn't contain loads of reddish colors, you can safely
drag Fuzziness up to 200, and try setting Hue
around -90 to -100. This will produce a blueish replacement.
The small preview already gave something of a warning, but you can
see on the original even better that some reddish hues haven't changed,
so the picture doesn't look very realistic. Of course, blue tomatoes
aren't too realistic themselves, but the photo still needs some
have to include the reddish colors still left in the selection.
Choose the eyedropper with the + sign and click one or more of the
still reddish areas in the photo. You'll instantly see the result.
final image can be refined with the proper setting of Saturation
and Lightness as needed.
you're finished, click OK and save the picture.
Free Photoshop Tutorial