Thanks gents.
Erik,
All of my resources are very English centred I'm afraid. I'd fade or drab down heraldic clothing but go a bit bolder with the shields and perhaps the banners and pennons. I am aware you are after some guidance on the retinue attire. I have been building an army which I would suggest might differ significantly from a skirmish sized retinue which seems all the rage at the moment. It may be that some replication of part heraldry and colours were used by a knight's immediate soldiery during the thirteenth century but it's much more a feature of later period forces and especially by the fifteenth century. If you trawl over my blog you'll see my infantry - I don't 'badge' them overly - maybe a shield with some colour which might align them to a lord but certainly no livery. Unless you have definitive information, field signs were the most common means of identifying an otherwise irregular looking force. For my Lewes project, the Rebels attached white crosses to their tunics and presumably painted them on shields - the Royalists used red crosses of St. George. Perhaps an irregular attired retinue would adopt a similar sign or badge prior to taking up arms?
Sorry I can't be of more help.