Working with ColorTable of Contents
The Color Box has 3 main sections: the Color Tablet, the Color Palette and the Color Similarity Selector.
The Color Tablet shows the current foreground color as a square on top of another square representing the current background color. When drawing with the mouse button, the foreground color is used, and when drawing with the mouse button the background color is used (except for the Erasers). You can click on the double-ended arrow to swap the foreground and background colors.
The Color Palette shows a selection of colors for you to choose from. The translucent pyramid represents the transparent color. Left-click on a color to set the foreground color and right-click on a color to set the background color. You can also drag and drop any opaque color into the Color Tablet squares. To edit a color in the Color Tablet or Palette, double-click on it. The Color Picker tool allows you to select a color from the image.
Color Similarity allows you to work more effectively with dithered images and photos, in a comparable manner to the “Magic Wand” feature of other paint programs. It applies to transparent selections, as well as the Flood Fill, Color Eraser and Autocrop / Remove Internal Border tools. Double-click on the Color Similarity Selector to choose how similar colors must be to be considered identical. When using selections in Transparent mode, any color in the selection that is similar to the background color will also be made transparent.
The left picture shows the example image. The right pictures demonstrate the use of a flood fill, with Color Similarity settings of 5%, 15% and 30%. In this example, with a Color Similarity setting of Exact, a flood fill at (80, 100) would only fill one pixel, as the surrounding pixels are similar but not identical. As Color Similarity is increased, more pixels that are similar in color are considered identical, hence the fill extends further.