astra_button_default_values_updated()
Function: Set flag for updated default values for buttons & add GB Buttons padding support.
astra_button_default_padding_updated()
Function: Check whether user is existing or new to apply the updated default values for button padding & support GB button paddings with global button padding options.
astra_theme_defaults
Filter Hook: Update Astra default color and typography values. To not update directly on existing users site, added backwards.