Will these bolt straight into the factory cutouts on my front bumper?

Yes. These mount at the factory side marker positions with no drilling or cutting required. Test-fit to confirm alignment before final installation.

Do the bulbs come with these, or do I need to source them separately?

Bulbs are included and pre-installed. You're ready to wire and go.

Can I paint these to match a custom bumper color?

The lenses are clear polycarbonate—painting them will block light output and defeat the marker function. Keep them clear or replace with colored housings if you want a different look.