I've never seen "new" Blue Streaks with the blue line. As a matter of fact, they only ones I've seen with the blue line were REAL originals, that were still on the cars they came on. The also have a different look than the current Blue Streaks, with a bit smaller "GoodYear" writing, and no "Eagle" anywhere on the tire like the originals. I don't think you'll find any tires with the blue line, but that's not to say you can't add it on yourself.
Of course I don't claim to be an expert and could be 100% wrong about it, these are just my observations
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Here is a great shot of an original type, credit goes to the CSXinfo site:
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Sal Mennella
CSX 4241, KMP 357 - sold and missed, CSX 4819 - cancelled, FFR 5132 - sold
See my car at CSXinfo.net here >> CSX 4241