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Here are two crucial things to consider:
1. Cost of Lowest Tier Crafting Mats Will Rise
Why? Because tier one mats are the cheapest way to get your crafting daily completed (which contributes to you getting more laurels). I tested and you do not need to gain experience in order to get credit towards the daily crafting achievement. It's easy to buy a bunch of logs and turn them into planks, for example.
2. Dyes May Not Be Effected At All
It seems like grabbing the bag of tier 6 crafting materials and even more so one of the tools is a far better deal than buying dyes. You would be better off selling the results of buying other items in order to buy dyes for a cheaper exchange rate. As long as that remains true, this should not hurt the dye market at all.