I had to ask the same questions of my raw supplier before. Over the last 2-3 years, I have found a very good supplier with products that are manufactured in close proximity to the time I order them. When I began using this supplier, it was my first experience with light colored trenbolones.
Here is the information I have gathered about the intensity of the gold color in trenbolones:
1) the age of the raw material makes a significant difference in the beginning color of the solution.
2) the age of the solution makes a significant difference in the color of the solution.
3) the application of heat during compounding will make a significant difference in the color of the solution; and
4) of course the carrier oil will make a significant difference in the color of the solution.
For my trenbolone products:
1) they are relatively new raw materials when I receive them.
2) I compound them as soon as possible after receipt.
3) I use zero heat on any of my compounds. I can tell you that this consumes a significant amount of time with some things. For example: testosterone cypionate at 16% benzyl benzoate takes almost 60 hours on average to dissolve at room temperature with constant stirring.
My trenbolones are completely dissolved in benzyl benzoate at room temperature before the addition of carrier oils. Sometimes the hormone will precipitate at the time the carrier oil is introduced; so I just wait again.
My rationale is that the application of heat and, more to the point, haste will negatively effect the efficacy or user experience of what I am trying to sell and use for myself.
I do have trenbolones in my personal supply that have gotten darker over the months. I do not know the effect this has on the product; but it is obvious that some change occurs over time. This would be a question better suited for a chemist than a biologist.
I can tell you that the trenbolone you received from me was manufactured 23 days before I received it and compounded by me the day after I received it; and it was dissolved at room temperature over greater than 24 hours.
Beyond these things, your guess is as good as mine regarding color variations.
Now for something that I am completely stumped by: my tren-A in MCT is darker gold than in GSO. Both were made from the same KG of raw material and dissolved on the same day. I can say for certain that, in this situation, the color is meaningless in determination of the presence or concentration of hormone.
I hope that is helpful.