If conditional formatting?

[d0n]

is it possible to do this?

what i want to do is say:

If A1="" then color B1 and C1 black, basically turning those cells off

[NBVC]

Select B1:C1 and go to Home tab.. Conditional Formatting and select New Rule

Select Use a formula to determine which cells to format

then enter formula =$A$1=""

Click Format and choose Black from the Fill tab.

[d0n]

Thank you, learning everyday