This script allows you to get the NBA teams' colors in xml format. You need to download requests library for python.

fetchNbaColors.py

import requests
import json
import string

def getTeamColorData(url):
    r = requests.get(url)
    data = r.json()
    for item in data:
        erasArray = item['eras'][0]['colors']
        print(item['name'])
        name = "<!--" + item['name'] + " Color-->"
        print(name)
        for color in erasArray:
            colorName = color['name']
            colorName = colorName.translate({ord(c): None for c in string.whitespace})
            xmlColor = '''<color name="{}">{}</color>'''.format(colorName, color['hex'])
            print(xmlColor)
        print("\n")
    
url = "https://api.teamhex.dev/leagues/nba"

getTeamColorData(url)