Elecrow now has purple PCBs

[wgc]

Different colors cost more because you have to run an entire standard panel (usually at least 2' sq.) in that color.  There may be some setup costs at the fab house too for cleaning the machines from std green and then back again.

Probably common knowledge but Oshpark is essentially contracting an entire panel in purple and then selling little sections of it to us until it is full enough to justify cost of getting the panel fabbed.  That's why you have to buy 3 piece min, and no choice in color, (which is distinctive and 3 is generally good bang for the buck for both parties.)  Pretty smart biz and marketing model imho.

Agree with enig comments, flux should help.  Also like the black pcbs!