They aren't looking bad to me. Some phenotypes produce a kind of pink/purple pigment in the pistils and it could be this color that you are seeing. If they do get brown and shrivel fairly soon after arriving that could be an indication of a nutrient or pH issue with the media. I have seen overfeeding during the 2nd and 3rd week of flowering have the same affect on more mature flowers. This could be similar.
Verify that the media has the appropriate pH and nutrient density; organic material can break down slowly over time and after a month or two the soil can reach a high nutrient density if the runoff has been inadequate. Do this by running plenty of water through the plant and collecting the run off. I would aim for about 2 liters of run off for every gallon of soil. This isn't really a flush, just kind of a rinse, or a reset. You're using pH balanced water and kind of rinsing the organics through to ensure that the soil is cruising.
You may want to use Reverse Osmosis filtered water for this procedure. Top dressing the soil with a little crushed dolomite lime (1-2tsp/gallon) to keep the pH buffer and micro-nutrients available. I suggest this because the source of your issue may not be the soil or the use (or non-use) of nutrients. It could very well be your tap water. Municipal tap water (city water in places where the population exceeds 100,000) is usually extremely poor quality. Generally it is reclaimed and treated sewage mixed with reservoir and piped in water that is subject to the wiles of nature and pollution. If this is the case for you, get a look at your water report and try to find the readings in your area for the water EC, and ppm (or ppb) analysis for all particulates. High levels of sodium, calcium, or bicarbonates should be avoided. It is good to know what you are drinking and feeding your plants anyway.
Don't do anything drastic. That's the key. Just rinse the media, make sure the temperature, pH and the nutrients, and the water are all A-ok, and that's about all you need to do. She'll take care of the rest.