Once objects have been selected, the line and fill color can be changed.
Select a block to change its properties in the Design Panel.
Change the Color of a Block
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Select a block of objects of varying colors.
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In the Design Tab
of the Design Panel 
, click the Line color, then select a new color in the Colors Window. See Choosing and Changing Colors. -
Click OK to apply the new color to your selected block.
Note: To select a new color for a fill, click Fill color, the select a new color in the Colors Window.
