I suppose because most clones before and after Order 66 are still indistinguishable by their armor. We still don't have playable Phase 1 and Phase 2 regular Clone Troopers, but I imagine they'd be light side.
Dark side Clone Troopers they could do however are Slick (though his armor is still too generic), Crosshair (Imperial), Clone X trooper, and Imperial Clone Commando.
that wouldnt make sense.... if most were on the light side I am sure there be way more rebel clone troopers but there isnt... like if they were light side they wouldnt attack villagers or wookies.... but thats just me... and they also wouldnt fight the bad batch...
