That way you could "upgrade" redstone wire/contraptions to their waterproof forms with villager trades or recipes.

Thanks for the suggestion.
I probably won't create separate thing for waterproof components. The main focus of this mod is just to add more colors for redstone. 'Colored properties' are some more or less random stuff that came out during mod development. If I would create separate versions of components I probably would do it for all of the properties not only for ''waterproof' or I would change the whole thing so you can 'apply' every property to every color. That may be something I will do in the future.
Furthermore if there would be waterproof components with the rest of properties there wouldn't be any reason to use vanilla redstone, maybe besides overhead of 'crafting', but I don't want the mod to be 'expensive' or grindy.
If you want to change crafting of waterproof components to be more expensive you can disable in-world recoloring in config and chage crafting recipes for blue components with something like CraftTweaker.
I'm not saying I will never create standalone waterproof components. I'm just not seeing a good reason to do that in this form.