Guys - Thank a lot!
@hankaye
Thread is brown, no name, well waxed and thick as 4/0 (I guess...).
Bluish-green is reflection of single pearl ICE dubbing fibre (Hareline) I used to mix with regular hare dubbing (90% hare + 5% pearl + 5% antron or UV of some color). This is not strict recipe, more the guideline, because it's very hard to count every fiber.

Just chop them and mix few pinches with coffe ginder. It's not secret, just can not remember exact composition. I usually use three hare dubbing colors: dark gray, light gray and march brown/rust hue... Light gray is basic for both flymphs above. Unless I dubbed body Leinsering style (or dubbed with loop) I don't miss a chance to brush body with velcro. Hence the "buggy" look.