Newly built Metroliner question

I just built this new 10001 set (I swapped doors from 4558) and it had 4 blue 1x2x3 trans-light blue train windows instead of clear. I checked bricklink and trans-light blue are listed in the parts with clear as the alternate? I haven't seen this mentioned before. submitted by /u/Agreeable_Fault9078 [link] [comments]