Kaleidoscope is the ultimate in user interface customization for the Mac, letting you switch between completely different interface designs provided by plug-in modules called "Schemes".
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Version 2.3.1 is a maintenance release, addressing problems with the menu bar clock under Mac OS 9.1, extended menu borders under Mac OS 8.1, and potential crashes when printing. It also fixes conflicts with AliasMenu, MYOB AccountEdge, ColorSwitch Pro, Style, Macromedia Fireworks, BBEdit, and Microsoft Office 2001.
System 7.0 or later