I'll always remember you Sif
Aw man. The feels!!
Is there a difference here?
It has to do with the gender of the item counted and if there is one or multiple.
Grå single en word
Grått single ett word
Gråa multiple of any wors
Is there a rule for what words are ett words?
Rather not. You should remember ett words.
I thought it was grey not gray
English spelling is grey. American spelling is gray
In normal speed, it sounds normal, but when I hover "grå", it kind sounds like "gråa".
Is it the normal (slow) pronounciation ?
That's right. It's just like in English. The word 'like' sounds different when you say it alone than when you mix it with other words.