Remove label for events in custom renderer

I am trying to display bpmn using custom renderer. I have used below example for same:

I am facing few issues. One is that the default labels are getting displayed for each event as in below ss. How do i just display custom labels?

Also, how do you give styles while doing createText?. I tried below way, but it doesnt seem to be working:

const textUtil = new TextUtil();

      const text = textUtil.createText("Complete", { padding: 0, align: 'center-middle', style: { color: 'blue' } });