I have tried downloading many different carrier os's for the 8800, all of them contain only

net_rim_theme_120_today_320x240_b.cod

(120 being the vodafone carrier Id, and this is the today theme)
Some of the ones i downloaded are listed in the options -> theme menu as "vodafone today - white", but they are all green/brown when activated. Others are listed as "vodafone today", and are green/brown

I have also tried copying the two today themes from the 8830 and the 8310 onto my 8800 but they are os v4.2.2 and do not display in the options -> theme list.