Also...like I said. If you read the description, he states where the seeds come from. Unless it's named like " Paul's Purple Fire".
here's a description of " Blue Monster " for instance..
Blue Monster from Goldenseed Company is a knockout indica-leaning hybrid with a complex genetic background. This strain is derived from G13, Blueberry, Northern Lights, and a Mexican landrace. Blue Monster offers both a bold, memorable aroma and a pervasive body high, sure to appeal to cannabis newcomers and veterans alike. Blue Monster’s THC levels have been measured at between 15% and 23%.
Blue Monster is marked by flowers that are medium to large in size. These buds tend to have chunky, irregular shapes, ranging from spherical to elongated and slightly tapered. Their structure is characteristically indica, with small leaves that curl tightly inward toward their central stems. The leaves themselves are a dark shade of forest green; sometimes, phenotypes of the strain even boast shades of dark blue and purple. These latter hues are the result of pigments called anthocyanins that ca produce blue and purple colors when stimulated by cold weather in the growing process. Finally, cloudy white trichomes make these colorful flowers even more eye-catching and account for their high THC levels.
The prominent scent wafting up from cured buds of Blue Monster is that of fresh blueberry. On closer inspection, there’s also an astringent, chemical tang, somewhat like ammonia or cat urine. Grinding up the dense buds releases some pungent fumes of diesel. When combusted in a pipe or a joint, Blue Monster burns with a harsh, acrid smoke that may trigger a coughing fit. This smoke tastes like sweet and sour berries on the exhale.
Blue Monster is excellent meds for stress, insomnia or nausea. Also good for PTSD. Flowering period is about 60 days.