All the Paint Shop Pro correction command dialogs have common ways of adjusting color and lightness. Keep the following key things in mind:
Lightness levels are specified in a scale from zero (no light, black) to 255 (100% light, white).
Image files store their color information in channels, or planes, of color. A color channel specifies the amount of a certain color in each pixel of the image. Many correction dialogs let you to edit the red, green and blue channels. The histogram also displays the hue, saturation, lightness, and greyscale channels. Colors are specified on a scale from zero (no color) to 255 (100% of the color).
Hue settings are displayed on a color wheel or they use values that represent positions on the color wheel. For a visual representation, look at the Jasc Color Picker. Although actual hue values range from 0 to 255, some correction dialogs use degrees to represent hues on the color wheel (from 0 to 359 degrees counter-clockwise starting at the top).
When you first open a correction dialog, reset the settings by choosing Default in the Presets drop-down list. Otherwise, the dialog uses the settings from the previous correction.
If there’s an adjustment layer available for a correction command, use it. That way the original pixels are left unchanged. If you change your mind or want to revise the correction, it’s much easier when you use an adjustment layer. See, Using Adjustment Layers
Depending upon the color depth of your image, some correction commands may not be available. It’s always best to work with images of 16 million (24-bit) colors. If needed you can reduce the color depth when you finish editing the image. For more information, see How Color and Tonal Corrections Apply to Images of Different Color Depths.