Its a weak inflection. Plural for Accusative ends with -en. I am also learning and making mistakes, but I have to admit its fun :) http://canoo.net/inflection/gr%C3%BCn:A?darj=0lang=enview=splitformInput=gr%FCn
Weak inflection,accusitive case,plural neuter tassen . There adj gets -en . What fun aint it .
what is the weak inflection all about?do we use it only in the case of colours?