Themes for xda mini s (k jam)

[Guest kedge]

I'm a bit confused when it comes to making themes for the new o2 mini xda s....

I have found sites that supply themes for qvga,pocket se vga, std ect...

Now some themes are 320x240 and others are 640x480 , what are the best for using with the xda mini s.

It seems if you use qvga themes they seem not so sharp on the mini s.

Is there a free theme maker for the k jam ect??