The sagebrush is in full bloom these days, and the pollen is flying around everywhere! The blooms are a light golden yellow to golden brown. Where the blooms aren't as intense or not as fully open, their color is more a light greenish yellow.
NOTE: This plant is formally known as Artemisia tridentata, or big sage, several subspecies of which are listed at the bottom of the linked-to USDA page. I've never tried to tell any of these subspecies apart. The phrase "yellow sage" is merely the title of this post, not a common name for any sagebrush or Artemisia that I am aware of. The Artemisia genus occurs throughout the United States and Canada, and includes plants like tarragon and wormwood. [Update 7-23-2009.]