I found a really deady combo that would kill colorless decks.  you use a 
combo of sprout tower wich reads-
    reduce damage from a colorless pokemon by 30.
and unown n-
 his pokemon power reads-
    all damage done to your pokemon by a colorless pokemon is reduced by 30.

so if you have both of these in play then its a whoopping reducing of 60 
DAMAGE from a colorless pokemon

coments to 
kalouminati@hotmail.com