Hello there!

After wrapping my head around in search for a solution, here I am, helpless and trying to find a solution here.

I'm trying to create a rectangle with rounded edges that's made up of two colors. Then I want to apply effects on top (like blur), but I'd like for the whole thing to act like a single object. Right now, I managed to create the rectangle out of two objects (after several differences), but applying blur on top of this, blurs the line between the two objects two.

Does anybody have any ideas about how to achieve this?

Thanks!

PS: My partial "work of art" is attached.

You could get a two coloured rectangle by applying a pattern or a gradient, but both methods will be affected by the blur.
What exactly will the blur achieve ?
I think we need to hear more about the effect you want to create.

I want to use this drawing as the background for a floating Android application. I want the edges to be blurry so that the floating window would not be as intrusive.

One one option would be to convert the two objects into one single raster image and to apply the blur to that. But I still have to find out how to do that.

Thanks anyway!

Later edit: I just realized how silly I was! Of course the border between the two colors would be blurred too! I'm not used to work solid colors... just photos. Now the question is: how could I only blur the outside edges?

Look up masking in the manual.

Edit:
made a possible solution -just edit the black&white gradient step positions to change the feathered edge.