A:AnswerWhite.. It's the "classic" mixer not the artisan series... if you want color spend the extra money: KSM150PSER Artisan Series which has multiple colors to choose from.
A:AnswerI believe it depends on the model.
If you purchase a 4.5 quart, they have colors to select for that;
If you purchase the 5.0 Artisan they have different or additional colors, etc...
A:Answer4.5 quarts. Plenty big enough to make a cake. Most home baking single recipes will fit in this mixer as they were developed for home bakers and this is the mixer that is the most common in the home for over 50 years.