Prince of Wales (POW) has great runs of silver (coho) salmon. A variety of colors is often needed to catch them. We often start off with pink or chartreuse, but as the day progresses purple, black and other color combinations become more effective. The following list has a variety of colors and flies to cover your needs.
Here is a link to my list of the Best Silver Salmon Flies for Prince of Wales Island.
Have a great trip!