Regarding 2, I assume you mean the boxes on the grid pages; the box for the active selection can be changed with, for example:
theme.GridScreenFocusBorderSD = "pkg:/images/box140x94.png"
theme.GridScreenFocusBorderHD = "pkg:/images/box210x158.png"
theme.GridScreenBorderOffsetSD = "-20,-20"
theme.GridScreenBorderOffsetHD = "-20,-20"
I don't think there is a border on the inactive ones?
aha, found the docs for the filterbanner image:
http://sdkdocs.roku.com/display/sdkdoc/roAppManagerFilterBannerActiveColor Po HTML HEX Color Value. #FF00FF 1.0
FilterBannerActiveHD Po URL to set HD Filter Banner Active/Focus Highlighter pkg:/images/Filter_ActiveHint_SD43.png 1.0
FilterBannerActiveSD Po URL to set SD Filter Banner Active/Focus Highlighter pkg:/images/Filter_ActiveHint_SD43.png 1.0
FilterBannerInactiveColor Po HTML HEX Color Value. #FF00FF 1.0
FilterBannerInactiveHD Po URL to set HD Filter Banner Inactive Highlighter pkg:/images/Filter_InactiveHint_SD43.png 1.0
FilterBannerInactiveSD Po URL to set SD Filter Banner Inactive Highlighter pkg:/images/Filter_InactiveHint_SD43.png 1.0
FilterBannerSideColor Po HTML HEX Color Value. #FF00FF 1.0
FilterBannerSliceHD Po URL to set HD Filter Banner Background Image pkg:/images/Filter_BackgndSlice_SD43.png 1.0
FilterBannerSliceSD Po URL to set SD Filter Banner Background Image pkg:/images/Filter_BackgndSlice_SD43.png 1.0
aspiring