When we use str.format() to pass variables on the message it will always
causes Exception like "KeyError: 'red'", since the message contains color
variables but it's not passed to str.format().
To avoid the error we need to pass all format variables to colorprint()
and run str.format() inside the function.
Fixes#3649
Signed-off-by: Takuya ASADA <syuu@scylladb.com>
Message-Id: <20180803015216.14328-1-syuu@scylladb.com>
ad7bc313f7