`plgcol0`: Returns 8-bit RGB values for given color index from cmap0
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#### `plgcol0`: Returns 8-bit RGB values for given color index from cmap0

`plgcol0 (` | icol0,
| r,
| g,
| b`)`;

Returns 8-bit RGB values (0-255) for given color from cmap0 (see the section called “Color Map0”). Values are negative if an invalid color id is given.

`icol0` (``PLINT``, input)

  Index of desired cmap0 color.

`r` (``PLINT_NC_SCALAR``, output)

  Returned value of the 8-bit red value.

`g` (``PLINT_NC_SCALAR``, output)

  Returned value of the 8-bit green value.

`b` (``PLINT_NC_SCALAR``, output)

  Returned value of the 8-bit blue value.

Redacted form: `plgcol0(icol0, r, g, b)`

This function is used in example 2.

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