In Armies of the Ottoman Turks, 1300-1774 by David Nicolle & Angus McBride, there is a black and white picture of the new 'Tufekci' infantry (http://www.warfare.altervista.org/Ottoman/Pashanameh-BL_Sloane_3584-f20a-BW.htm). It took me a while to find a coloured version: Ottoman Tüfekçi musketeers of Ken'an Paşa in a Pāshānameh, c. 1630. British Museum, Sloane 3584, folio 20a (http://www.warfare.altervista.org/Ottoman/Pashanameh-BL_Sloane_3584-f20a.htm)
it can be seen that they all wear a red fez, but their coats are variously red, blue, brown, etc.
Druzhina
Illustrations of Ottoman Costume & Soldiers (http://www.warfare.altervista.org/Ottoman/Ottoman.htm)
Fezzes are cool
With bow ties?
Is that a fez? It could be the tubular Janissary cap, couldn't it?
I think fezzes. On the bottom right of the picture are two Jannissary with their caps and these have been drawn very differently.
On a few that are facing to our right can be seen 2 or 3 dark feathers in a brass coloured holder on the right-hand side of their fez.
Druzhina
17th Century Illustrations of Costume & Soldiers (http://www.warfare.altervista.org/17C.htm)