Great job on both quilts--i just bought a Spongebob Squarepants book panel and a Little Einstein one to make quilts out of. On the Abe Lincoln one, if you do not like the white, either purchase a permanant beige marker and color it, following the directions for that brand (some you have to heat set, others you do not) or you can also use coffee dabbed on with a Q-Tip
Just make sure to heat set the coffee one if you use it before sandwiching so it won't wash out.