Im wondering on which colored background will give the least reflection inside the tank. Currently, Im using a black background on all 3 sides of my tank because Ive learned on the net that its better so that my betta cant see his reflection however, after Ive been using the black background I noticed that it reflects the plants, filter, heater, etc in the tank to the point that my betta keeps swimming into the glass . Any clue on background colors that wont give off much of a reflection?