Acorn Acorn 6

Rainbow Color Effect



This tutorial will show you a way to add a creative color effect to black and white photos.  This works best with an image of a light object against a darker background.  Open your image in Acorn, File ▸ Open. 

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If your image is not already black and white, go to FilterColor Adjustment ▸ Color Controls.  Bring the Saturation slider all the way to the left so that the image becomes black and white.


Now, create a new layer on top of your image, Layer ▸ New Layer (⇧⌘N). Select the paint tool and paint some colors over the image. 

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Set the blending mode of this layer to Color.  You can choose to leave the boundary between the colors as a hard line...

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...Or apply a Gaussian Blur to the Color layer by selecting Filter ▸ Blur ▸ Gaussian Blur to smooth out the color. 


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