changing the color of a indicator line

[John Hayden <haydenol@xxxxxxxxx>]

Hi listers,

Does anyone know how do the following:

I have a custom indicator that is plotted as a blue line. What I would like
to do is change the color to yellow for the past 21 bars. So if I am
looking at a 10 minute bar chart the line color would be yellow for the
last 210 minutes and anything older would be blue.

Any idea's would be greatly appreciated.

John Hayden