To create a modified design image, both the alpha value and color of {HEAD ~ pixels} in {TAIL ~ the original design image} are modified 
To create a modified design image , both the alpha value and color of { HEAD ~ pixels } in { TAIL ~ the original design image } are modified
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH