The documentation for Color.Println says:

Spaces are always added between operands and a newline is appended.

However, this is not the case. The method uses c.wrap around fmt.Sprint, which has the following space separation:

Spaces are added between operands when neither is a string.
Source

Example problem:

color.New(color.FgCyan).Println("Foo", "Bar")

Expected output is "Foo Bar", real output is "FooBar".