Implant Crown Options

A 40-year-old man has severe periodontal disease (Fig.1).  The teeth #8,9 were extracted and replaced with immediate implants and provisionals approximately 4 months ago (Fig.2: taken 1.5 months postop). 

What is the best crown option to cover metal shade of abutments and implants (Fig.2)?

Xin Wei, DDS, PhD, MS 1st edition 11/04/2013, last revision 11/20/2013