Adds color to ERROR and SUCCESS in check mode.

[sztamas]

Fixes #1177.

Did this with colorama as I think it doesn't warrant introducing something like termcolor or blessings. colorama is needed anyways with both of those to support Windows.

Some further considerations:

• we might want a --no-color option to turned the colors explicitly off. Colorama turns them off by default if you're piping the results into another command
• the diffs aren't colored when using --diff

Sidenote for @timothycrosley : we're running out of issues marked with help_wanted, so you might want to add a few more if you have the time 😄

[codecov-commenter]

Codecov Report

Merging #1349 into develop will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##           develop     #1349   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           34        34           
  Lines         2288      2315   +27     
=========================================
+ Hits          2288      2315   +27     

[timothycrosley]

This looks great! Unfortunately, this is complicated a bit by isorts policy to never include dependencies. isort is depended on by some large projects such as pylint, so in the past when it did include or rely on dependencies the odds of conflicts were very high. See: https://timothycrosley.github.io/isort/docs/major_releases/release_policy/#packaging-guarantees. I do think that the policy could be clarified to say that will change isort file output. However, it would still be necessary I believe to make this the non default, and require a flag such as --color for those that want it.

[sztamas]

OK, thanks for sharing the background info!

How about adding colorama to extras (https://python-poetry.org/docs/pyproject/#extras) then?

We can keep the existing functionality as is, add a new --color option which errors out with a descriptive message to install the colors extra if colorama is missing.

What do you think?

[timothycrosley]

@sztamas Exactly! That sounds like a perfect solution

[timothycrosley]

This looks awesome! Thank you!