in spinup/utils/logx.py [0:0]
def colorize(string, color, bold=False, highlight=False):
"""
Colorize a string.
This function was originally written by John Schulman.
"""
attr = []
num = color2num[color]
if highlight: num += 10
attr.append(str(num))
if bold: attr.append('1')
return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), string)