I use the keyboard...
square brakets, url, txt, /
If you gave a 100 monkeys just these 4 symbols [color=008000][[/color] , [color=ff0000]][/color], [color=0000ff]http://www.link[/color], [color=ff00ff]the text[/color], then they would work it out eventualy
[color=008000][[/color] url=[color=0000ff]http://www.link[/color][color=ff0000]][/color] [color=ff00ff]the text[/color][color=008000][[/color] /url[color=ff0000]][/color]