We all are aware of the evolution of certain frames and their color (notably Plasma but also Titanium)-are there color variations over the life of the X Metal finish? The reason I ask is because I have just acquired a serialed pair of X Metal frames...probably early 2000's by the serial number...and they look darker to me than the current frames I'm seeing. Its hard to compare without them side by side, but the frames I have look considerably darker and somewhat rougher (and not due to wear, just in how the metal was run off) than what I'm seeing in new frames. Is this true from anyone else's experience or am I just seeing things? This is important to me because I bought these online along with an X Metal case for $170. The seller represented them as in better condition than they are and has agreed to refund me $70 to cover the cost of sending to Oakley for a tune up. I'm selling the case for probably $20 net and have lenses for the frame already so that's $170-$70-$20 + $75 (tune up and shipping) = $155 total cost if I keep them....or I could take the $70 and sell the frames and case as is and recoup my cost, turn around and just hunt down a new X Metal frame (which I could do for roughly $215 if patient and flip the ruby lenses for $45 net = $170). Question is....are these darker in color (I prefer that) and is it worth it to keep them and have them tuned given this (and/or the fact they are serialed) and the cost breakdown as it exists?