The button inside the color picker does not have set the type attribute.
So it is interpreted as if it is of the type submit.
The site effect then is, when it is used in a template form and a user presses the enter keyboard the dropdown of the color-picker is open.
If it is an error, would it be possible to provide a fix where the button type would be set to "button"?
<button type="button" class="rz-colorpicker-trigger">