You seem so passionate about this, it hurts to break your heart.

When you set your text to be bold, that's a separate font, made by a human hand.

Browsers have a fake bold look when the font is missing, but it's not a look you want on your site. They just, well... smudge it to the right. For Emoji the fake bold look is disabled, because bold or italic emoji is just non-sense on the face of it, so they don't support weight settings.

Also, you can't set the color of Windows Emoji via CSS. They're already colored.