I would like to use colored anodized aluminum to replace a few parts on my sailboat. What issues might arise from this?I mostly sail in fresh water but occasionally in moderately salty or brackish waters. How is the corrosion resistance of anodized aluminum?

Anodized aluminum is very suitable for applications involving exposure to sea water and is routinely used for parts such as masts. Corrosion resistance is good; however, the parts should be kept clean. The buildup of dirty surface deposits can provide sites for corrosion, particularly if there is associated acidity. Coloring using dyes may be a problem because many dyes are susceptible to the effects of sunlight and may fade or change color.