First of all, the color of registered trademarks is consistent throughout the country and will not be different because of different regions.
Secondly, when Xi 'an registered the trademark, the black and white trademark applied for did not prohibit the use of color at the legal level, that is to say, color can be used, but the color was not protected.
Finally, to sum up, whether it is trademark registration in Xi 'an or anywhere in the country, the initial registration is black and white, and color can be used when using it, but the color trademark will not be protected. If the initial registration is colored, other colors are not allowed. In addition, if the landlord has other questions about Xi 'an trademark registration, you can visit the webpage link.
I hope my answer can help the landlord solve his troubles.