Color switches to a black and white screen after login

iMac 700MHZ Graphite 10.3.9 color issue. When I am logging in the screen is in color but after login when it switches to my desktop the color also switches to a black and white screen. The other user of this computer does not have any problem with the color on his desktop. Has anyone run into this problem before? Any help would be greatly appreciated.
Thank You
DP

Go to System Preferences>Universal Access, the 'Seeing' pane and uncheck 'use greyscale'.

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Color switches to a black and white screen after login

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