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theme

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hi,after the installation of a theme in my tb nebula, i see it above, but all my mails, all tb , have a black underground.i tried a few others themes , and its always the black underground. Why does a theme interfere in the background? how can i install a theme that i can see only above, without making the background?

hi,after the installation of a theme in my tb nebula, i see it above, but all my mails, all tb , have a black underground.i tried a few others themes , and its always the black underground. Why does a theme interfere in the background? how can i install a theme that i can see only above, without making the background?

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