[Qgis-developer] Continuous Color style

[Luca Delucchi]

Hi everybody, I'm working on OGR2Layers python plugin, I'd like to
implement also continuous color style, but I didn't understand how can
I assign a style to each features. With also style type like unique
value or graduated I had all the classes of style (symbols class) with
continuous color I had only the first (min value) and the last (max
value), is there some mathematical functions for calculate the
intermediate classes?

Thank's
Luca