Ok, Sox, my tabby, has white and black paw pads on each paw and his lower lip is half white and half black. Didn't know if this was common with cats as it isn't too common with dogs.
Both my Sho and Tomas are tabby and white - they have pink and black toes. Sho has a black spot over part of his inner bottom lip. Since the skin under their tabby patches and spots is dark, I figured that it's normal.
My Radar is a black & white bicolour but his markings are slightly unusual in that they are very irregular rather than symmetrical which is more common - his chin is half white and half black including his lips and gums, and he has some pink and some black paw pads on each foot - even though his toes and feet are mostly white
You can just about see a black part of his chin in my signature
I've got a black and white tuxedo cat. He's got black lips and nose, and his paw pads are mostly pink with a little black. I think it is normal to have a mix, depending on the color of the fur.