An extended fall colors season is in its peak, but will likely end soon due to this week’s forecast. According to the Iowa DNR, they are still seeing some great color in south central Iowa. Oak trees are changing; viewers can expect variations of tan, purple, red on the upland landscape. Hickory is bronzy-orange and there is still some color in the bottomlands — including mainly yellows and oranges, but leaves are falling fast in those areas. Urban hard maples are still bright red and orange as well. The leaves will be dropping fast this week with cold temperatures and overnight freezes expected.