Grown this strain several times and never ran into this problem. Some of the leaves coming from the buds are yellow and even some white!
Hey Yea doesn't look like a light problem looks like a nutrient problem or possibly a PH problem. BUT it looks like you are deep into flowering nearing the finish so maybe you just got a funky Phenotype of the strain you usually grow and it doesn't take nutrients as well.. just a thought. good luck!