Adding colors to built-in RTE

Hi

I'm trying to add color to built-in rte for background and foreground, but after unfocusing an element - style prop resets. Here is an example : https://jsfiddle.net/2s3vhygn/ Looks like i need to update an model and set up styles on it. Trying to update model using this code:

const selectedText = editor.getSelected();
editor.select(selectedText.find('.selected'));
editor.getSelected().setStyle({ color: 'red' });
editor.getSelected().removeClass('selected');

But inserted span isn't selectable.

So i have few questions:

1. What im doing wrong?
2. How i can attach an default color picker to rte panel?

I'm not using CKeditor because it cause that after saving, element is no more editable.