Here is an Order of Battle for Poltava 1709 and the basic uniform details
Infantry
Vastmanlands Regt (2 battalion) ~ Tricorn, blue coat, yellow facings. natural leather vest and breaches and yellow stockings.
Narke Varmlands Regt (2 battalions) ~ Black Karpus hat with red facings, Blue coat, Red facings, natural leather vest and breaches, red stockings.
Jonkopings Regt (2 battalions) ~ Tricorn with white baid, blue coat, red facings. natural leather vest and breaches and red stockings.
Vasterbotten Regt (2 battalions) ~ Blue Karpus hat with white facings and blue and white braid, Blue coat, white facings, white vest and breaches, whitestockings.
Ostgotland Regiment (1 battalion) ~ Tricorn with yellow and blue lace, blue coat, yellow facings. Yellow vest and blue breaches and yellow stockings. Red neckcloth.
Uppland Regt (2 battalions) ~ Tricorn with white braid, blue coat, yellow facings. natural leather vest and breaches and yellow stockings. Blue neckcloth.
Dalcarian (or Dal) Regt (2 battalions) ~ Tricorn (some may have still had Blue Karpus with yellow lining), blue coat, yellow facings. blue vest and natural leather breaches and yellow stockings. Blue neckcloth.
Kalmar Regt (1 battalion) ~ Tricorn with blue and white twisted braid, blue coat, yellow facings. natural leather vest and breaches, and blue stockings.
Skaraborg Regt (1 battalion) ~ Tricorn, blue coat, yellow facings. natural leather vest and breaches and yellow stockings. White neckcloth.
Foot Guards Regt(3 battalions, 1 Grenadier battalion) ~ Tricorn with white braid(?) (Grenadiers had mitre), blue coat, yellow facings and collar. Yellow vest and breaches and yellow stockings.
I hope that helps to start with, let me know if you want Cavalry.
The Swedes are pretty well documented, its the Russians I have huge gaps for.
The above informations comes from Lar-Eric Hogland and Ake Sallas's excellent book "The Great Northern War 1700-1721, Colours and Unifroms". It is available through Bacus
http://www.baccus6mm.com/index.php?cont ... blications