Enhancement: support ANSI codes in paramLabel under the Options listing

[bbottema]

I tried giving paramLabel on OptionSpec a color with @|green ...|@, but the text is printed as-is in the "Options:" listing.

As the descriptions and the paramLabels have the same color (and are also not aligned), it's becoming really messy having many options. With some clear color distinction I think the descriptions will look a lot better.

[remkop]

Hi Benny,

The ANSI style of the option parameters can be customized with the color scheme.
See https://picocli.info/#_configuring_fixed_elements

[bbottema]

Ok, I'll look into that. Thanks.

[bbottema]

Actually, here I run into the same issue as #433. I guess I'll have to do without CommandLine.printHelpIfRequested().

[remkop]

I’ll see if that can be included in the next release. Pull requests welcome!