The theme you're using for the UI looks very nice. Where can I find it?
I've found a "Maya2015" theme on Blendswap, which looks similar:
Early in my Blender teaching days, I would use the "Momo" theme. You should still be able to download the file from the page and install in 2.79 and prior. It's based on another 3D app called Modo.
I'm not sure if there's a modo-like theme for 2.8x. I stopped using themes because too often it confused viewers.
Thank you so much for the theme! I like the color and to me it's very eye friendly 😊. For teaching it's certainly better to keep the default theme so that it's easier to reference UI elements by their colour.