fleck (something) with (something)
To cause something to be spotted or speckled with something else. Gross, the kids flecked the bathroom mirror with toothpaste.
flecked with (something)
Spotted or speckled with something. Gross, the bathroom mirror is flecked with toothpaste.
fleck something with something
to put little specks of something on something. They flecked the little figures with some kind of powder that made them sparkle. His hair was flecked with gray.