`plscolbga`: Set the background color by 8-bit RGB value and double alpha transparency value.
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#### `plscolbga`: Set the background color by 8-bit RGB value and double alpha transparency value.

`plscolbga (` | r,
| g,
| b,
| alpha`)`;

Set the background color (color 0 in color map 0) by 8-bit RGB value (see the section called “Color Map0”) and double alpha transparency value.

`r` (`PLINT`, input)

  Unsigned 8-bit integer (0-255) representing the degree of red in the color.

`g` (`PLINT`, input)

  Unsigned 8-bit integer (0-255) representing the degree of green in the color.

`b` (`PLINT`, input)

  Unsigned 8-bit integer (0-255) representing the degree of blue in the color.

`alpha` (`PLFLT`, input)

  double value (0.0-1.0) representing the alpha transparency value of the color.

This function is used in example 31.

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`plscolbg`: Set the background color by 8-bit RGB value | Home | `plscolor`: Used to globally turn color output on/off