Looking at my alpha male, I realised that I have not achieve anything near to my goal. And judging from it, I still need further crossing to Blue Grass females and the result was very encouraging I must say.
F1 male x Blue Grass female (virgin

)
Result = Most platinum stain are wiped out in F2, Blue Grass finnage color and pattern imposed, Shark finned dorsal, negative effect-grass patterns consolidates become a big patch

Weird as I didn't expect this to happen......but the trend is there anyway.....
So F2, 2.5 months old......