I have an issue regarding flow transparency in my assembly. My assembly consists of multiple parts, of which I turn transparency on and off several times a day. I have created channels in these parts, to accommodate flow through the parts. When multiple parts are transparent however, it becomes increasingly difficult to identify the channels which accommodates "Flow-in" and "Flow-out". I've tried creating different surface colours in both the assembly, as well as individual parts, but when turning trasparency on, the surface colours disappear. Does anyone have a solution for this?