Kyle,
Pat is clearly talking about discoloration...
Would off-color firm and fast potentially be more expensive than lush and green?
Invoking Ceterus Parabus, no. As you well know.
I think there is a bit of misconception that is bred from the golfer's viewpoint as to how one GETS to firm and fast. Take Huntingdon Valley today, for example. We're green, healthy and firmish and fastish. Certainly not as firm and fast as we were two weeks ago for the Lynnewood, however. The weather has been a constant presence and hinderance.
In fact, I'd say we're almost TOO healthy. It becomes tough to keep up with the grass growth and dew, for example. Both of these things hamper firm and fast conditions and require labor and machine costs to mitigate.
Therein lies my point. The golfer's view (4-5 hours of the golf course) and the superintendent's view (8+ hours), most of which are before the bulk of the golfer's view, are two completely different things.
We also must consider that June had something like 20 days of measurable rain all during the course of cooler than average temperatures. It's only been in the past week that the temperature and humidity have conspired to put golf courses in the area under considerable disease pressure. Simply put, it's been relatively easy to stay on top of things agronomic so far, this summer.
Absent a more holistic approach to golf maintenance - one that accepts that a season/month/time-period-longer-than-a-day here and there may be "less than ideal" (whatever that means) - it's hard for me to really consider the firm/fast/brown approach as a categorical solution.
I wonder how many green committees/supers are willing to accept areas of the golf course that are ridden with disease. When I see pictures of golf courses in the British Isles, for example, I see plenty of fairway ring, dollar spot and other fungi/insect damage that I know few would tolerate here in the States.
Does drier generally provide most disease tolerance? Yes, until the weather ceases cooperating. Wet, hot and humid conditions will always breed disease - it's whether or not the plant is capable of mitigating itself and how much the super needs to help it along that will change the way the course "plays" to the golfer.