Do these require any drilling or permanent modification to install?

No—these mount at factory rocker points with no drilling or cutting. Pull the old housings and bolt these in place.

Can I control the RGB colors on the road, or are they locked to one setting?

They cycle through programmed color modes automatically. The specific control method and mode options depend on the wiring harness configuration—test the unit before final install to confirm the sequences work for your preference.

What if condensation builds up inside the housing after a few months?

The sealed optical housing is designed to keep moisture out under normal highway and weather conditions. If fogging occurs, the housing may have a manufacturing defect—document it and contact support with photos for return eligibility.