Hey Jim, you can definitely do what you want in excel using something called conditional formatting.
Select column C.
On the Home tab, in the Styles group, click "Conditional Formatting".
Hover over "Highlight Cells Rules", and then click on the type of rule that you want to create ("Equal To...").
In the dialog box that appears, enter the value that you want to use for the rule (Y), and then select the formatting to be a green background.
Do the same for N and a red background.
Then for the DCC Address, a formula such as =IF(C2="N", "0", "") should work. and just drag it down as you usually would. Then set the conditional formatting for the orange colour.
The steps might be slightly different depending on the version of Excel you are using, but hopefully points you in the right direction!