This is my first post, as I've only been lurking here for the last week or so, but hopefully the brainstorming that will follow can inevitably lead to a new technique for the Faux Nation. Reading up on you guys -- I have been duly inspired by your absolute passion for the Little Soldiers of Felt which lead you into battle

!! LOL
As i'm reading the Faux Clay dyeing techniques I've been struck by several brainstorms, or brainfarts depending on the success, for creating your edgespots. Now I know these will be extremely time consuming and painstaking, but you all seem to be "all-in" types of personalities. I have a couple ideas, starting with the least likely:
1. Barring the fact that it may change the feel of the chips, you could use Krylon Fusion Plastics paint, and hand paint edgespots on your chips. Pros: Many colors, deep and rich. Cons: Time consuming, may change the way the chip feels. But the paint is a fusion paint which bonds directly to plastic. You may be able to fine grade sand it back into faux clay standard.
2. Two step process: I can imagine a scenario where dyeing WHITE MODELING CLAY (or if that doesn't work: Vaseline, or even the rubber cement glue) by mixing with a concentrated formulation of RIT, then placing onto your white chips in edgespot formation would provide a proper "stain" of the chip if left for several hours or days. (I know I've seen this happen when kids have left certain clays on plasic desks. The oils and the coloring stains plastic.) You could do two colors side by side. If it works, you can then "mask" the edgespots with rubber cement, and dye the entire chip accordingly to spec. PROS: Multi colored edgespots. CONS: I have no idea if it'll work and it might just be futile.
I just thought I'd drop a post, because I'd hate to not say anything and then realize it would've worked for you guys. Maybe it'll inspire someone to have a better idea, or a working idea for that matter. But hopefully it'll add to the brainstorming for you guys.
BTW, appreciate the forum, you guys seem like a good lot, and I've had fun reading up. I have a set of ProPrestige727 used for Tourney play which have served me well (less "clinky" than DICE, with a slight chalky feel), and a brand new set of Nexgen Originals custom labeled for tourney AND cash play (because we play mostly 1/2, 2/4 NL nowadays) that I haven't put into cirulation yet. I'm planning on hitting up the PI China's next year, if I feel like buying a new toy.
Hopefully the ideas help.
BAER