This model has different layer heights in the colors to make it appear with a shaded effect under light. The front looks very different when unlit compared to lit!
Included is the STEP file to modify the model how you want for your preferred light method.
Backplate is in the Raw Files section.
The holes in the back are for USBC port and an on off switch linked here:
USBC: https://a.aliexpress.com/_mPzo30o
On/OFF Switch: https://a.aliexpress.com/_msxT1XO