visual basic code to monitor colours in powerpoint

[bjorn d]

Powerpoint uses rgb-colours, hard to manage.
A certain created drawing [f(x)] is changed when being looped over e.g X= 1
to Xn. I would like to have a separate set of code to set the colour of such
f(x) drawing while being looped (and changed in a number of ways). An
algorithm in the form of visual basic code for application (powerpoint 2003)
would be smashing. My target is to let the f(x) drawing adopt the rainbow
colours while being looped.

Thanks in advance for support