needs opacity darkener

I had noticed that your sample pics are set much darker than you can trying to adjust this in the actual program. its just way too light! needs to be fixed. i would have really liked this and more add ons that arent so cheesy and a hue rotater, to use to change the lightning color would also be good. bottom line is the samples come out to light on the highest setting. i cant even get my clouds or anything as dark as your samples using the opacity sliders? why not fix this?

Splinter Cell about Weather Photo Effects