code: func (c *Checkbox) SetFormAttributes(labelWidth int, labelColor, bgColor, fieldTextColor, fieldBgColor tcell.Color) FormItem {
  	c.labelWidth = labelWidth
  	c.labelColor = labelColor
  	c.backgroundColor = bgColor
  	c.fieldTextColor = fieldTextColor
  	c.fieldBackgroundColor = fieldBgColor
  	return c
  }
docs: // SetFormAttributes sets attributes shared by all form items.