rear window decals

[LP3Leos]

Wanting to put a long narrow design decal on the top of my rear windshield, but can't find any info on those "lines" going across the glass, if they are for reception: satellite, GPS?? Will the decals interfere in any way? Have a 2009 G37 White Journey Sedan. Want to add some pizazz and unique design (professional grade- NOT stickers). Thank you for reading and any help

[audtatious]

The lines are part of the rear window in-glass antenna w/diversity system while other lines in the window itself is, of course, the defroster. Unless the decals are metallic in some way I don't necessarily think they would hurt anything.