I accidently used yellow instead of white will it turn out Ok? has anyone done that?

I have. It will be fine, just not white.

I use a variation on the WASC recipe for all my cakes , all flavors works ,fine every time.

You can use any flavor cake mix for WASC!

Have you seen this?

http://docs.google.com/Doc?id=df4f9hbq_46cs9f28fs

You'll be amazed!