chalkboard

Where can i buy a green chalkboard in Nepal?

Just wondering where I can buy a green board. Have seen them in schools but don’t know where to get them. I can only find whiteboards. ​ https://preview.redd.it/3gjilis8ulqb1.png?width=1000&format=png&auto=webp&s=14e1ce5d9bfe887787a581e9d2adafb06ff50694 View on r/Nepal by yabaidesup