The orange edges don't match each other (look at the bottom corners!), the gray box behind the keys is ugly, and the number contrast is poor! How did Apple let that poor craftsmanship out the door? There... that's out of my system 
So FWIW, I whipped up this easy-to-install fix. It still has the orange scheme, just cleaned up. And the buttons and numbers are unchanged by this--it's just a single file that changes the calculator body (including making the screen "brighter" for readability).
Try at your own risk... I expect it will work well, but I don't have Tiger running yet so I can't test it yet myself!
Just Show Package Contents on the calculator widget, and drop the attached file "Calculator.png" into the "Images" folder. (And back up your widget first! Who knows what future updates might be confused by the change, so you might want to do this with a copy of the widget.)
If I have the image name or size wrong or anything, please post. I also wouldn't mind seeing before/after screenshots so I know how it works!
If people want I can easily post alternate colors of the same.
So FWIW, I whipped up this easy-to-install fix. It still has the orange scheme, just cleaned up. And the buttons and numbers are unchanged by this--it's just a single file that changes the calculator body (including making the screen "brighter" for readability).
Try at your own risk... I expect it will work well, but I don't have Tiger running yet so I can't test it yet myself!
Just Show Package Contents on the calculator widget, and drop the attached file "Calculator.png" into the "Images" folder. (And back up your widget first! Who knows what future updates might be confused by the change, so you might want to do this with a copy of the widget.)
If I have the image name or size wrong or anything, please post. I also wouldn't mind seeing before/after screenshots so I know how it works!
If people want I can easily post alternate colors of the same.