configuration

colors require the leading # and all options have to be wrapped in quotation marks. refer to this link for more info regarding colors.

general

Background: wallpaper path, absolute or relative. can be placed in the backgrounds/ folder for extra convenience.
Font: please name the font family!
FontSize: this size is used for everything except the date and time.
Padding: specify how far stuff should be from the screen edges.
Radius: set to 0 to disable rounded corners on UI elements.
UIScale: if UI elements are too big or small, try to adjust this value. you should probably keep it below 1, though.

UAPBorderWidth: set to 0 to disable the border around the picture.
UAPBorderColor: remember to include the "#" when specifying color! will not show when border width is 0.
UAPColor: color of the default, blank avatar. only visible if you don't have your own picture.

FieldBackground: background color of the input fields.
FieldText: color of the typed text.
FieldBorderWidth: border width of the currently selected field. set to 0 to disable the border.
FieldBorderColor: border color of selected field. not visible if width is 0.
UserFieldBgText: placeholder text shown when user field is empty.
PassFieldBgText: placeholder text shown when password field is empty.

this refers to the popup window that appears when you click the power/session button or user picture.

PopupBackground: background color of popup window.
PopupHighlight: color of the currently selected entry.
PopupHighlightText: text color inside the currently selected entry. this is provided in case the highlight color clashes with the text.

of course, equivalent options exist for the time (I'm too lazy to type them up).

DateColor: date text color.
DateSize: font size for the date.
DateIsBold: whether date text should be bolded. accepts "true" or "false"
DateOpacity: date text opacity value between 0.0 (completely transparent) and 1.0 (fully solid).
DateFormat: here, you can create a custom date format.