There is a CRUCIAL TRICK to painting Ikea furniture that is laminate! Zinsser B. Primer–this is CRUCIAL. This is a shellac based primer. You cannot use a water-based or oil-based primer that you may be used to.
I really love this idea, would like to incorporate in the stone in the basement area instead of mosaic risers - I've re thought this and think may be too overpowering. Thinking tiled risers and small pebble mosaics in floor would be much nicer.