Big F'n hammer.
No really try a flat head jeweler's screwdriver.
That's how I got my Camaro ones out. Just be VERY careful it sucks trying to find decent used ones
When you do get them out if they seem loose around the place where they sit in, the soft side of Velcro works great.
Legalize the right to knock the sh!t outta anyone that thinks day-glo paint and undercar neon kits add hp or make a car faster.