Impact InnovationsChristmas Lighted Window Decoration, Snowflake (94999D)

Are these snowflakes cool white or warm white bulbs?

Do the lights flash/twinkle or are they steady?

Is there a switch to turn it on and off or do you have to plug it in everytime?

I purchaged these last year and loved them. Carefully packed them away. This season, 2 didn't work, 2 more have died. Any one else have problem?