I dry the same way and they look like most of mine do, strain will also play a part in it. In general the more light the more golden the bud, seem to be my results. I have very high humidity problems and open air drying is my only option in order to keep my dry times in the 14 to 21 day range.
As you've already heard, it could be the strain, light, or other. My input falls under other because once I have jarred my bud it stays pretty much the same color because it is "sealed" in an air tight container. It's the plant matter that changes color not so much trichomes changing color. Being exposed to air, heat and light makes it lose the green turning it to a beige, brownish or tan color. I just smoked some AK48 that was not in an air tight container and it had turned much lighter in color. The smoke was better than I remembered.
I read an article once about that being the reason for the old weeds in the 70's like Acapulco Gold.... Apparently they would just dry it in bundles outside, restacking every once in a while to prevent mold.
i was readin sumthing about that just the other night, it was in columbia they'd do it
