In just a few lines, the speaker describes two very different states. The first is a dull morning. Calling life "insipid" means it feels flavorless, and comparing it to "a long play" suggests something rehearsed and scripted, as if the speaker is simply performing lines someone else wrote. The title, "Scripted," points the same way. The mood here is flat and weary, with a sense of being stuck in routine and watching oneself go through the motions.
Then the poem shifts. "In moonlight / I am paper." The image is quiet and strange. Paper is thin, pale, and fragile, and moonlight would make it glow softly. It could mean the speaker feels exposed and weightless at night, or that they become a blank page, free of the script and open to being written on in a new way. The poem doesn't say which. That ambiguity leaves a mood of stillness and gentle possibility, a sharp contrast with the tired daytime.