here we stand in ravishing rain

Under init:

$ style.default.font = "Font of your choice goes here"
$ style.default.size = 20
$ style.button_text.size = 22
$ style.button_text.hover_size = 22

$ style.window.background = Frame("Textbox picture goes here", 12, 12)
$ style.window.left_margin = 10
$ style.window.right_margin = 10
$ style.window.top_margin = 10
$ style.window.bottom_margin = 10

$ style.window.left_padding = 45
$ style.window.right_padding = 45
$ style.window.top_padding = 3
$ style.window.bottom_padding = 3