App, what program did you create the icon with? I don't know much about this, but I assume you set white as the transparent color, and that's what helps make it look good on the form's title bar?
I have never done my icons completely in an icon editor...always did the art in an app more suited to creating art and then importing it into the icon software. There was no setting of any color as transparent.
I used Paintshop Pro v7 to do the actual image, starting with a transparent background and building everything in layers on top of that, saving as a png (auto-merges layers, preserves transparent background), then importing the png into IcoFx
IcoFx is free, and you can use whatever art program you prefer (Photoshop, Gimp, Paintshop Pro, etc).













Thanks again 





