colorstring 
colorstring is a Go library for outputting colored
strings to a console using a simple inline syntax in your string to specify
the color to print as.
For example, the string [blue]hello [red]world would output the text
"hello world" in two colors. The API of colorstring allows for easily disabling
colors, adding aliases, etc.
Installation
Standard go get:
$ go get github.com/mitchellh/colorstring
Usage & Example
For usage and examples see the Godoc.
Usage is easy enough:
colorstring.Println("[blue]Hello [red]World!")
Additionally, the Colorize struct can be used to set options such as
custom colors, color disabling, etc.