Color disabling flags seem to be ignored on Windows 10

## Platform details

Platform (macOS, Linux, Windows): Windows 10
Platform version:
JRE/JDK version (`java -version`): 64-Bit Server VM 1.8.0_60-b27

## Boot details

(boBoot version (2.7.1): 2.7.2
`build.boot` present? (yes/no): yes
`~/.boot/profile` present? (yes/no): no
Task name? (if applicable):
build

## Description

## Steps to reproduce

I executed the following in a boot repl:

boot.user=> (boot (build))
?[1mWriting pom.xml and pom.properties...
?[m?[1mWriting ignition-project-1.0.0.jar...
?[m?[1mInstalling ignition-project-1.0.0.jar...
?[mnil

See the strange ?[m? characters?