Create a fill with one style and place it in your object. Create a different style and place a second fill on your object. Mess with that fills opacity until you get a pretty neat effect. You can blend different colors together too, and remember to try gradient fills with this trick.
Drivers Download
If you are working in Impression and are trying to get a blended shade, but you can’t quite get it to work with a gradient fill, try placing multiple fills.