​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​HELP! i've had this cute swaddle blanket packed away since last year, some color got on it and i don't wanna ruin it. How do i wash it without ruining it??