regarding the colour gradient comment: i was referring to the background of the app tile/icon.. it fades from a dark yellowish to a light brownish, a fairly pronounced shift. while there’s nothing wrong with that generally speaking, it tends to contrast (in my opinion, in a bad way) the ‘metro’ design common to the os where gradients are typically avoided, or less pronounced if used, in favour of flatter design (solid colours)..
regarding the wp8 version: totally understand you have to prioritize. if you ever do get around to it, would love to hear your thoughts on the process of porting from w8 to wp8.
all the best