The 'Fat Albert' cultivar of the Colorado blue spruce (Picea pungens 'Fat Albert') is a specific variant with unique characteristics. Here are some features of the Colorado blue spruce 'Fat Albert':

1. Form and Shape: 'Fat Albert' is known for its dense, conical or pyramidal shape. It has a compact and rounded form, giving it a distinctive appearance.

2. Needles: The needles of 'Fat Albert' are short, stiff, and arranged densely on the branches. The color is a striking silvery-blue, which is a hallmark of the Colorado blue spruce.

3. Size: It is a medium-sized tree that typically reaches a height of 10 to 15 feet at maturity. This makes it suitable for smaller landscapes or gardens where space is limited.

4. Growth Rate: Like many Colorado blue spruce varieties, 'Fat Albert' has a moderate growth rate. It doesn't grow as fast as some other species, which can be an advantage for those looking for a manageable-sized tree.

5. Adaptability: 'Fat Albert' is adaptable to a variety of soil types but prefers well-drained soil. It is also tolerant of cold temperatures and can withstand harsh winter conditions.

6. Landscape Use: Due to its compact size and attractive appearance, 'Fat Albert' is commonly used as an ornamental tree in landscaping. It works well as a focal point or as part of a mixed evergreen planting.

7. Low Maintenance: Colorado blue spruce, including the 'Fat Albert' cultivar, is generally low-maintenance once established. It requires minimal pruning to maintain its shape.

Remember that specific growing conditions and appearances can vary based on factors such as soil, climate, and care practices.