The typical Zouve style military uniform of baggy trousers, waist sash, short jacket and fez formed the uniform of the main bulk of the Turkish army from around 1860 to 1890 as far as I am able to determine. The Turks themselves had a pair of designated Zouave units serving in the Imperial guard and sporting a green fez and although the army was dressed in a similar fashion was not similarly designated. The fez was often worn with a cloth around it - the 'turbanned' fez - so having both types in a model army would be accurate Obviously such considerations for an 'imagi-nation' are not really applicable but for me it would serve to help distinguish units. I was quite surprised by the amount of armies that made use of this uniform/troop type aside from the well known ACW and French versions. A quick browse through Wikipedia revealed Spanish, Polish and even Papal Zouaves.
Perry plastic Zouves use both he turbaned and plain fez whilst the Spencer Smith version is the turbaned variety only.
For my purposes I shall be using this uniform type for the main bulk of Fezian army and in truth it will be based primarily on the Turkish equivalent of 1877 although the lure of red trousers (the Turkish version was dark blue) may be difficult to resist! The uniform does have a certain degree of 'swagger' about it and readily appeals to my mental image of the exotic nature of the old Ottoman empire.