Changes the opacity value of all the pixels that match color to the value specified by opacity. By default the pixel must match exactly, but you can specify a tolerance level by setting the fuzz attribute on the image.
The desired opacity.
If true, all pixels outside the range are set to opacity.
See Implementation
Changes the opacity value of all the pixels that match color to the value specified by opacity. By default the pixel must match exactly, but you can specify a tolerance level by setting the fuzz attribute on the image.