I've been referencing @w0lf's answer to help me calculate the sum of cells based on their background color in Google Sheets. From the comments and some other research it appears that changing the color doesn't trigger a change in the cell. This causes my function to never update.
Does anyone know a way to force my sum function to update when just the background color of a cell in my range changes? I've tried changing the update settings under "spreadsheet settings" already, that doesn't work.