Lego Cover solution

Eustace: The inside wheel cotmnneops were originally the heads of the Bohrok from earlier Bionicle sets. They are usually translucent with a fading opaque pattern on them. I have no idea where solid blue ones came from. GIS bohrok to see what I mean.Specifically it is this part:Those links are for the part in solid colors. It never appeared in any retail set it blue (dark blue, not the color shown here however), but LEGO sometimes makes test runs of molds in colors that are never meant for production. Likely this was something like that and the designer simply used the test pieces for this one of a kind set, or they did a small run of this piece in blue for internal use.While it's very cool that LEGO made this set for Mr. Mead (and as Brotherclone pointed out, someone at LEGO is obviusoly a big PKD fan), I've never been partial to the Technic sets. I much prefer the fan made that you can find at and .