I'm looking for a pure white cake recipe so I can add color. Any suggestions. I've looked through a ton of recipes on here but I'm a little confused. Some use butter, which is yellow, and vanilla, which is brown and some use the whole egg. How can the cake be white if you are adding ingredients with color??
And how would I add the color without changing the cake?
TIA!!

Are you a scratch baker or would you prefer a doctored cake? Here's a White Chocolate doctored cake recipe.
1 box Betty Crocker white cake mix
1/4 c. cake flour
1 1/3 c. water
1/4 c. veg. oil
2 t. clear vanilla
1 t. butter flavor
3 egg whites
1 small box white chocolate pudding

And that recipe that she just posted is SOOOOOO awesome! Yummy!

I'd prefer scratch but that does sound super good!! And would I just add color at the end? Will it thin the batter any?

The butter flavoring is really yellow. If you aren't going for a snow white cake, the addition of that extract shouldn't matter though.

By the way, Wilton imitation vanilla is easily accessible (usually) and is clear and not brown.

If you use gel/paste colors, they won't thin down your batter as opposed to the liquid squeeze stuff you find in grocery stores.