Page Comparison

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• html color name

  Code Block
  "color": "red"

• gray level

  Code Block
  "color": "gray50"

• hexadecimal RGB code

  Code Block
  "color": "#FF0000"

• word none, for transparent color

  Code Block
  "color": "none"

• an array of RGB (three components for red, green and blue, between 0 and 255 included) or RGBA (four components adding alpha component to RGB components, between 0.0 and 1.0 included or "0" and "100%") components

  Code Block
  "color": [255,0,0]

  Code Block
  "color": [255,0,0,"50%"]

  Code Block
  "color": [255,0,0,0.5]

• a string starting with $dom to specify the dominant color of the image. It can be followed with the index of the dominant color.

  • $dom means the first dominant color

  • $dom2 means the second dominant color

  • $dom2-1 means the second dominant color, skipping the first one

    Code Block
    "color": "$dom"

• a string starting with $gradient:, followed with the starting and the ending colors, separated by a dash, to specified a vertical gradient.

  Code Block
  "color": "$gradient:red-blue"

  You can specify an extent with a dimension value:

  Code Block
  "color": "$gradient:red-blue-50%"

  No color value means none:

  Code Block
  "color": "$gradient:red"

  is equivalent to

  Code Block
  "color": "$gradient:red-none"

• a string starting with $pattern:, followed with the name of a pattern, to specified a pattern.

  Code Block
  "color": "$pattern:checkerboard"

  Status
  title 2021.6

  The name of the pattern could be followed by a scaling factor, separated with an asterisk. Example : $pattern:checkerboard*5 (multiply size by 5).
  See list of Available fill patterns below.

• the string $blur, or a string starting with $blur: followed with blur parameters, to specify a blur of the background image.

  • blur parameters: It’s two positive integers separated with an x. The first is radius and the second sigma.

    Code Block
    "color": "$blur:25x25"

  • $blur is equivalent to $blur:3x3

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Used to configure an overlay for watermarking

colorization

A color blending factor (in percent from 1 to 100), or an array of three factors, one for each color channel (red, green and blue), or a string that contains the triplet like 50,25,70 or 50|25|70.

commands

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