`colorize` not available in shell and not included in installation instructions

[drydenb]

Hey there!

In the pyenv-virtualenv script, there is a reference to a command called colorize here.

To my knowledge, this command is not installed in most shells, and I wasn't able to find instructions in the README on how to install this dependency, or what version that dependency should be.

Could anyone shed some light on this dependency? Of course, the workaround is to not set PIP_VERSION and avoid the code block entirely, but currently it looks like this code can break after running the pyenv-installer in most shells if this env var is set.

[austinpray-mixpanel]

Furthermore, I get

colorize: foreground color '1' cannot be made of non-alphabetic characters

even with colorize/focal,now 0.64-1 amd64 on ubuntu 20.04

[native-api]

colorize is a shell function defined in python-build. Its use here is indeed a mistake. It needs to either be removed or copied over from there.