First of all I'm very sorry if this is in the wrong section but it's a very simple question. Would I be able to fit this 120mm fan on instead of the 140mm fan the case comes with? I'm trying to change the overall case to blue instead of green to match my keyboard/mouse. or should I just get this 140mm fan to replace the side panel one and then use the 120mm fans to replace the front and rear fans that are alrdy in the case?