Program color on ADX and DMI

[JDFO@xxxxxxxxxxx]

    Here is one that has me stumped. I want to have the ADX line change from
blue to yellow when it crosses above the 30 level. Also, the DMIPlus change
from dark green to green when it crosses over the 25 line and the DMIMinus
change from dark red to red when it crosses over the 25 line.I have the
indicators ADX and DMI's coded but can not get the colors to change at the
appropriate times.
    I assume that this can be coded but am having a problem with it.  Anyone
have any suggestions on how this can be done.
    Many thanks again for any assistance.
    JohnO