Hi there, I'm a big fan of MuJoCo but totally new to OpenGL, etc. What would be the best way to add a simple rectangle with an rgb(a) bitmap that updates at about 10fps to a rendered Mujoco view? I imagine it might be possible to add some 2d rectangle, give it a texture and then update that texture periodically. If this is the best way about it, how large (in terms of resolution) could those textures reasonably be? Hopefully, these are reasonable questions, Nik