OK. I have read the sticky post (on creating your own Winterboard theme) at the top of this section. I have added a 'UIImages' folder and a Bundles folder to my new theme. Into the UIImages folder I have placed edited versions of the AppIconMask.png, AppIconOverlay.png and AppIconShadow.png images so I don't get the shine and mask on my App Store icons.
I have set up the folders so that the theme changes just the icons for each ap. Most of them have worked apart from the 'Adikus Pool' Icon. I know I have called everything the correct name as the icon changes when I add a new .png. However the icon appears to be smaller than the other icons. Does anybody have any idea what I could be doing wrong? Thanks.