Why Bermuda Grass is brown?

Bermuda Grass has both rhizomes and stolons. Its leaf texture varies from coarse to very fine depending on species and variety. Bermuda Grass has a deep, fibrous root system, with rooting occurring at the nodes of the stolons. This grass is widely used on lawns, roadsides, parks, school grounds, athletic fields, golf courses and other areas where a close-mowed, dense turf is desired. Bermuda Grass is sensitive to cool temperatures and will stop growing and turn brown when soil temperatures fall below 10ºC . Bermuda Grass has poor shade tolerance.