colored grouped list view depend of status colum

i have a list with view grouped by status

i need to change the background color for the grouped header depend of status value

like if it high the background will be red if low it will be green

i have 3 weeks searching over internet all i find working if the view dosent have grouped by

i have sharepoint 2007 enterprise.

Thanks for any help :) my blog is: http://www.waelk.com