You also have the option to set the display to grayscale, to do this:.To increase or decrease the contrast level at any time press ‘Ctrl’ + ‘Alt’ + ‘Apple’ + ‘.’ (period) to increase contrast and ‘Ctrl’ + ‘Alt’ + ‘Apple’ + ‘,’ (comma) to decrease the contrast. The colour scheme will change straight away, to switch between the high contrast and standard display scheme at any time press ‘Ctrl’ + ‘Alt’ + ‘Apple’ + ‘8’.To change to a high contrast white on black colour scheme click on the ‘White on Black’ radio button or press ‘Tab’ to select and the arrow up or down, Fig 3.Click to select ‘Seeing’ or press ‘Ctrl’ + ‘F7’ to highlight one of the four tabs for example ‘Keyboard’ and then press the left or right arrow key to select the ‘Seeing’ tab.Click to select ‘Universal Access’ or ‘Tab’ repeatedly (you might need to press ‘Ctrl’ + ‘F7’ first) to cycle through the icons until the ‘Universal Access’ icon is selected shown in Fig 2 and then press the ‘Spacebar’.Click on ‘System Preferences.’ as shown in Fig 1 or press the down arrow key to highlight it and then press ‘Enter’.Click on the ‘Apple’ menu or press ‘Ctrl’ + ‘F2’.Make sure you are in ‘Finder’, press ‘Apple’ + ‘Tab’ if necessary to cycle through open applications until you return to ‘Finder’.Using the high contrast colour scheme Step 1 Note: For keyboard access make sure ‘Full keyboard access’ is turned on - you can turn it on or off by pressing ‘Ctrl’ + ‘F1’ at any time. Note: Mac key convention: ‘Ctrl’ ' is used for ‘Control’, ‘Apple’ is used for ‘Command ’ and ‘Alt’ is used for the ‘Option ’ key. This section explains how you can change your colours in Mac OS X Mac OS X 10.6 Snow Leopard - Changing colours
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