just got a granddaddy blueberry (gdp x blueberry) clone from BPG. anyone familiar?

I ended up with a grandaddy blueberry clone that was mostly stem thinking that it would be sweet purply blue madness. But then I looked up more on blueberry and realized that its usually green with ocasional blue hues. I thought it was supposed to be hella blue but alot of the bud pics i saw were green. is this true? If so has anyone tried gdp crossed with blueberry? im worried now that it will be mostly green, that the blueberry won't add much blue at all but instead subtract most of the purple from the gdp. any other info on either of the strains or the crosses genetics taste smell growing expirience, things to look out for ect would be helpfull.

I will be transplanting into a larger rockwool cube or hydroton and hand watering. I have x nutrients grow/micro/and bloom and biobizz grow, topmax, bloom. how much and should i start feeding her? i noticed as soon as i got it that a couple of the leaves had some yellowing around the edges and tips. I think it might be nute burn but i havent fed it yet.... maybee it is easy to overcook these strains? and the club fucked up?