Looks like it does not need any external textures, my magos loads it fine. The main texture is a water texture. So I could color it black, green, red or in different shades of blue for you.
Edit: I think I found a possible mix of texture and colouring. Now I only have to find the right shade of purple...
Edit2: Have the right color, but the alpha is now a problem, it is opaque. Seems like the chronosphere model uses a strange material filter mode that Magos does not know.
Edit3: Yep, FilterMode Modulate 2x, Magos does not know it. The Color is not completely fitting, but changing it would take too much time and it looks well enough.