Change the color of the bottom play pause icons in WALKMAN

Code:

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;W580 SW-R8BE001
;change the color of the bottom play/pause/... icons in WALKMAN
;its changed to white
;(c) yener90
;(p) Photographer
44F42650: 0078FFFF FFFFFFFF ;white BBGGRRAA

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I don't see any different. What exactly this patch do?