Slightly dissected leaves are dark purple. If you need a narrow specimen 'Red Obelisk' is a great choice.

Scientific Name: Fagus sylvatica 'Red Obelisk'
Zone: 5
Light: Sun to Light Shade
Height: 40'
Width: 6-8'
New Shape: Columnar
Foliage: Purple
Flower: Insignificant
Fruit: Insignificant
Fall Color: Purple-red