Salmon eggs do change color. BUT, use what you have confidence in.

For browns, pink works well. Brown eggs have a redish color and are smaller than salmon eggs. Eggs that don't get covered will wash out within a few minutes to a few hours making them lighter. For some reason dark blue eggs patterns work very well for steelhead this time of year. Chartreuse is always a good choice. Stone fly and Caddis patterns work well, as do hair and feather wing streamers. Crystal meth and sucker spawn patterns work well also.

If you know your presentaion is good, and fish are there. Keep changing your fly until you start getting hits. Tight Lines.