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Is there any way to change the text color in Table View Cell?

A TableViewCell's text_label is a regular Label and can thus have its text_color changed:

class MyDataSource(object):
    def tableview_cell_for_row(self, tv, section, row):
        cell = ui.TableViewCell()
        cell.text_label.text_color = (1.0, 0.0, 0.0, 0.0)
        cell.text_label.text = "I am red"
        return cell

This creates a new cell, I want to modify an existing one.

Here's a snippet of code in my flashcard program. highlight is a global that corresponds to the row needing highlighting in the items for the tableview.

    def tableview_cell_for_row(self, tableview, section, row):
        # Create and return a cell for the given section/row
        cell = ui.TableViewCell()
        cell.text_label.text = self.items[row]['title']
        if row == highlight:
            cell.text_label.text_color = 'red'
        cell.accessory_type = self.items[row]['accessory_type']
        return cell

I also set a checkmark on this cell. Remember, this is called every time cell appears on the screen. As when it scrolls into view.

Is there a tutorial on how to create custom TableViewCells (with multiple subviews like labels, images, etc.) and then populate them with data?

Ah - https://forum.omz-software.com/topic/1922/adding-a-label-to-tableviewcell-it-s-offset-by-one - seems to be a good starting point!