Hi Sikas,
I would always suggest to produce the goods that you have boosted. This means that you have the original material available (as Hippo said it's the flower)
You get the raw material on the world map. Per age, you discover 2 raw materials out of the lot (there are 5 per age, so out of the 5 things to produce per age, you only have 2 boosted, which are the ones you get from the world map)
So you could still research the technology to build the dye works but if you don't have the raw material; then it will produce nearly nothing and will cost you a lot for not much. That's why I think it's best to produce what you have on the world map, and then trade those goods against those you need, in the market with your guildies or your friends/neighbours.
Do you have the flower unlocked on the world map ?