Most beautiful GUI (OS 4, Windows 8, ...)?

[itix]

From Amiga flavours I find MorphOS beautiful if you consider out of the box look. AmigaOS or AROS not so much but Birdie themed AmigaOS is very beautiful.

From other platforms OS X is cute. Windows 95 theme is functional but dated.

[itix]

My vote is on Mac OS Classic, more specifically System 7. The simplicity and elegance of the GUI elements, along with the great bitmap fonts and icons made by Susan Kare are just perfect together. OS X is ugly by comparison.

That background image doesnt fit with with MacOS Classic theme.

Among Amiga systems my vote is on AmigaOS 3.x with MagicWB and MUI.

Oh yes, 8 colour MagicWB/MUI is beautiful. But only in 8 colours. Add more colours and it does not work anymore.

[itix]

Have you tried fullpalette? mine works just fine.

What I mean is MagicWB is optimized for 8 colours. Add more colours, like 24-bit background image or toolbar icons, and it does not look right anymore.