A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Let's say the list is in A2:A45.
Select this range.
On the Home tab of the ribbon, select Conditional Formatting > New Rule...
Select 'Use a formula to determine which cells to format'.
Enter the formula
=AND($A2=MIN($A$2:$A$45),COUNTIF($A$2:$A$45,$A2)=1)
Click Format...
Specify the desired formatting.
Click OK, then click OK again.