GD graph, Several Colors per Bar?

Hi.
I'm struggling with a GD::Graph -problem.
I want to create a graph with bars by
adding(+) the execution time from each little job within my nightbatch.

lets say my nightbatch took 20 minutes.
on day1
job1 took 2 min
job2 took 10 min
job3 took 8 min

and on day2
job1 took 10 min
job2 took 10 min
job3 took 5 min


If i create the graph by using the 20 or 25-minutes -value on Y-axis. Ill
never get the trends for my smaller jobs in a good way.


Y-axis (minutes)
25 |job3| <-red
20 |job2| <-blue
15 |job2| <-blue
10 |job1| <-green
5 |job1| <-green
----day2--------- X axis date


I'm pretty lousy at explaining things, but perhaps there's someone out
there that understands and has got a suggestion on how to solve this?

Regards!





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