I'd remove the paint to the nearest panel line or edge, otherwise trying to match the color and feather it in is a real pain.
I've never used brake fluid, but I seem to recall that it works for everything. Probably the method of choice for enamels and lacquers, as any organic solvent that takes these off efficiently will damage the plastic. Acrylics are easily removed with Windex (or equivalent) or concentrated Simple Green.
The hard part is controling the removal solvent—it tends to remove most masking materials, too! Without masking, I've used a cotton swab soaked in the appropriate solvent for the main area, then used a chisel-shaped brush for the edges. Go slow and careful!