In the end of the 24 hour day, all that calorically matters is the law of energy balance: Whether you Maintained an approximate balance, surplus, or deficit. When we are talking Gain or Loss of Tissue weight.
Dependent upon age, sex, wgt, and other biological factors, on average a person burns 60 to 80 calories per hour when sleeping: take this approximated number times the number of hours of sleep will give one a rough idea how many calories were burned during this segment of the 24 hour cycle clock.
Eating before bed should not hurt your progress if your sensible about it and know your caloric ingestion during the day and when your 24 hour clock cycle began.
I cycle my clock, and sometimes it ends at 9PM in the evening (at 9p the clock ended for the---day before, and a new day begins). I have consumed 800 calories before bed (good clean food WITH carbs), and lost weight on a regular basis---because the end result of the day was a deficit balance. Im not advocating 800c before bed, this was an example.
Brown Rice contains complex carbs, and these are slow releasing carbs. If your not overly sensitive to carbs, complex carbs should be okay.