The other thread linked above went totally OT, so I post my info here.
I did just that, replaced the old side moldings for the HYBRID ones:
I own the 2006 model, got replacement parts for the 2007 model at Sewell from Texas. They are approx. $79 each. Make sure you order the correct color code. Part number is 75076-480x0-A0, where x specifies the side. Promocode "CLUBLEXUS" still works for an extra 15% discount.
They come of really easily. Open front door, grab them head-on with your finger tips and tear them off applying well dosed force. Clean the area from remaining tape, dust and dirt and apply the new ones. They fit perfectly and you can't put them on wrong or unlevelled. Takes about 10-15 min.
Enjoy.