help!, trying to shiny hunt darkrai - shaymin in platinum

[TiffanyDarlet]

hello, i have a legit platinum card with my own ID, started and finished it normaly used a app in my 3DS to inject the wondercards to redeem the items member's card/oak letter from mistery gift (legaly) , wich let me unlock interact and catch the special pokemons normaly but i want to shiny hunt darkrai and shaymin with my own ID, it is possible to catch them shiny or it have a shiny lock? 
i tried soft reset the game but i want to be sure if i can/can't acomplish it before atempting or losing time haha 

any help is appreciated, thanks in advance 

[BlackShark]

They can be shiny, yes.

[TiffanyDarlet]

thank you very much, now i feel more confident about trying to collect them