-default = basic_color('39')
-black = basic_color('30')
-red = basic_color('31')
-green = basic_color('32')
-yellow = basic_color('33')
-blue = basic_color('34')
-magenta = basic_color('35')
-cyan = basic_color('36')
-grey = basic_color('90')
-light_red = basic_color('91')
-light_green = basic_color('92')
-light_yellow = basic_color('93')
-light_blue = basic_color('94')
-light_magenta = basic_color('95')
-light_cyan = basic_color('96')
-white = basic_color('97')
-
-on_default = basic_color('49')
-on_black = basic_color('40')
-on_red = basic_color('41')
-on_green = basic_color('42')
-on_yellow = basic_color('43')
-on_blue = basic_color('44')
-on_magenta = basic_color('45')
-on_cyan = basic_color('46')
-on_grey = basic_color('100')
-on_light_red = basic_color('101')
-on_light_green = basic_color('102')
-on_light_yellow = basic_color('103')
-on_light_blue = basic_color('104')
+"""
+16 basic colors
+"""
+default = basic_color('39')
+black = basic_color('30')
+red = basic_color('31')
+green = basic_color('32')
+yellow = basic_color('33')
+blue = basic_color('34')
+magenta = basic_color('35')
+cyan = basic_color('36')
+grey = basic_color('90')
+light_red = basic_color('91')
+light_green = basic_color('92')
+light_yellow = basic_color('93')
+light_blue = basic_color('94')
+light_magenta = basic_color('95')
+light_cyan = basic_color('96')
+white = basic_color('97')
+
+"""
+16 basic colors on background
+"""
+on_default = basic_color('49')
+on_black = basic_color('40')
+on_red = basic_color('41')
+on_green = basic_color('42')
+on_yellow = basic_color('43')
+on_blue = basic_color('44')
+on_magenta = basic_color('45')
+on_cyan = basic_color('46')
+on_grey = basic_color('100')
+on_light_red = basic_color('101')
+on_light_green = basic_color('102')
+on_light_yellow = basic_color('103')
+on_light_blue = basic_color('104')