Changes

1) Locate the 'Table Of Contents' panel on the left 2) Locate the layer of interest 3) Double-click on its symbol (circle, diamond, rectangle ...) 4) 'Symbol Selector' window pops up 5) Click on the drop-down of 'Color' 6) Click on 'More Colors' 7) Input the appropriate RGB values 8) Click OK 9) Then Click OK