yeah ... same problem here... strobe spinning and splat themes aren't affected of the problem cause of theyr light refresh/change...

i have the r8 firmware too and i heard arund that sony knows the issue and is trying to fix it for the next firmware release...

for the meanwhile we can try fix in those 2 ways :

1- try changing the walkman skin light color to the same as the wanted skin
2- making skins wih continous changing light

but since now i couldn't do none of those 2 options... any help would be great!

NOTE : i also niticed sometimes it reverts back to green/yellow even closing the phone