Corel PaintShop Pro X7, DE User's Guide download pdf (Page 651)

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101

Working with advanced color features 647

• Set the transparency value to the current background color —

makes the background color transparent

• Set the transparency value to a palette entry — specifies a color

to be transparent. Click the color in the image, or click the color

box to select from the current color picker.

If you want to view the transparency, click Proof.

3 Click OK.

The color is now transparent; however, it may still be displayed

until you hide it.

To view or hide the transparency of a color

Edit workspace

• Choose Image  Palette  View Palette Transparency.

Understanding color and color models

We usually think of color as a quality inherent in an object — for

example a red car or a green frog. But color is really what we see as a

result of three factors interacting: light, the object, and the observer.

As rays of light hit the object, the object absorbs some light and

reflects some light. We see the reflected light and perceive it as color.

Different colors reflect light of different wavelengths. Human eyes are

able to perceive thousands of colors in the visible spectrum of light.

When you apply ink to paper, the colors we see result from the light

that the ink reflects. Computer monitors use emitted light rather than

reflected light. The colors we see result from light emitted from the

screen.

To describe how color is produced or perceived, we use color models.

Computer monitors display colors by producing varying amounts of

red, green, and blue light — the RGB color model. Human eyes

perceive color by its hue, saturation, and lightness levels — the HSL

color model. With Corel PaintShop Pro you can select colors using

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Corel PaintShop Pro X7, DE User's Guide Page 651

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