Titanium jewelry looks really nice in a HEALED piercing and is amazingly compatible with the human body, but it's not appropriate for an initial piercing.  The color will change (to a dull grey),  much more quickly, and the finish can come off in a fresh piercing. 

A lot of people ask about titanium, so here's a quote from a pamphlet from Anatometal
"Titanium is an extremely lightweight, elemental metal. . .. Titanium is the most bio compatible of all metals due to its total resistance to attack by bodily fluids. Titanium is often used in permanent surgical implants where the tissue is encouraged to assimilate the implant. . ..
"Titanium jewelry is available in a range of colors which are produced through anodizing, not dyeing. During anodizing, the jewelry is submerged in an electrolyte solution and voltage is applied. Anodizing cause the Titanium Oxide layer to grow. The color results from refraction of light through the oxide layer, and the thickness of the layer determines the resulting color. . .. The anodized oxide eventually wears away, causing the color to fade or change; how long the process will take depends on the thickness of the oxide layer and the amount of friction and wear on the jewelry. Unanodized and unpolished Titanium is light to medium grey in color."