UI Bug in Comic Input plugin: "Number of colors" option misbehavior

The" Number of Colors" option of the Comic Input plugin does not behave as the tooltip describes:

Here is how the field actually behaves:

1. The default value is 256, not 0 (so the option is also not off by default).
2. The max value is 32,000,000, not 256. :confused:
3. The minimum value isn't 0. The spinner controls actually stop at 8.
4. Setting the value directly to 0 or to any number lower than 8 (with the keyboard) just goes back to the prior value as soon as the field loses focus. :dunno:
5. As a result, there seems to be no way to disable this option. :smack:

I suggest that this part of the interface be made consistent with the rest of this plugin's UI by adding a checkbox at the start of the line to enable/disable the option, and editing the description so it matches the actual behavior.

Thanks in advance! :thanks: