Button won't check on the builder.

{% block content %}
<!--Build Area -->
<form action="{{url_for('save') }}" method="POST" class="wrap no-top">
    <div class="grid-100 row">
        <div class="grid-30">
            <div class="title">
                <input type="text" name="name" value="{{ saves.get('name', '') }}">
            </div>
        </div>
        <div class="grid-70">
            <div class="colors">
                {% for color in options['colors'] %}
                    <input type="radio" id="{{ color }}" name="colors" value="{{ color }}"
                        {% if saves.get('color') == color %}checked{% endif %}>
                    <label for="{ color }"></label>
                {% endfor %}
                <button class="btn">Update</button>
            </div>
        </div>
        <div id="bear" class="grid-100">
            <div class="bear-body"><img src="/static/img/bear_body.svg" /></div>
            <div class="head"><img src="/static/img/bear_face.svg" /></div>
            <div class="nose"><img src="/static/img/bear_nose.svg" /></div>
        </div>
        <div class="items">
        </div>
    </div>
</form>

{% endblock %}

import json

from flask import (Flask, render_template, redirect, 
                   url_for, request, make_response)

from options import DEFAULTS

app = Flask(__name__)


def get_saved_data():
    try:
        data = json.loads(request.cookies.get('character'))
    except TypeError:
        data = {}
    return data

@app.route('/')
def index():
    data = get_saved_data()
    return render_template('index.html', saves=get_saved_data())

@app.route('/builder')
def builder():
    return render_template(
        'builder.html',
        saves=get_saved_data(),
        options=DEFAULTS
    )


@app.route('/save', methods=['POST'])
def save():
    response = make_response(redirect(url_for('builder')))
    data = get_saved_data()
    data.update(dict(request.form.items()))
    response.set_cookie('character', json.dumps(data))
    return response

app.run(debug=True, port=8000, host='0.0.0.0')