How do I make an animation "spread" to other sprites?

If a sprite (for example) turns blue after being hit by a bullet, how would I get other sprites of the same type to also turn blue on contact with the sprite that first turned blue? I've tried setting instance variables but haven't had any success.

Save the type in a local variable. Then use "System pick All sprites", then you can pick all sprites of this type and turn them blue.

Bullet on collision with Sprite
 local variable type
	Set type to Sprite.Type

	System pick all Sprite
	Sprite compare instance variable Type=type	
		Sprite turn blue

Many thanks, dop2000.