Controlling RGB LED with two buttons.

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Quick update: I now have a working code. Thanks for all the help everyone. The only problem is that if one of the buttons is held down, the colors will cycle automatically. I have added a delay that somewhat counteracts this, however this project is being designed for a handicapped woman, and i would like to remove any and all possible user error from the equation. Basically, is there a way to limit the program so that no matter how long a button is held down for, it will only step once?
Here is my current code:

const int redledPin = 11;
const int greenledPin = 10;
const int blueledPin = 9;
const int buttonPin1 = 2;
const int buttonPin2 = 3;
int color=1;

void setup ()
{
  pinMode (redledPin, OUTPUT);
  pinMode (greenledPin, OUTPUT);
  pinMode (blueledPin, OUTPUT);
  pinMode (buttonPin1, INPUT);
  pinMode (buttonPin2, INPUT);
}

void loop ()
{
 if (digitalRead(buttonPin1)== LOW)
{
  color++; //increment color
  if (color >7) color = 1;
  delay(750);
}
  
if (digitalRead(buttonPin2)== LOW)
{
  color--;  //decrement color
  if(color<1) color = 7;
  delay(750);
}
  
   switch (color){
    case 1: //white
    analogWrite(redledPin, 250);
    analogWrite(blueledPin, 250);
    analogWrite(greenledPin, 250);
    break;
    
    case 2: //red
    analogWrite(redledPin, 250);
    analogWrite(blueledPin, 0);
    analogWrite(greenledPin, 0);
    break;
    
    case 3: //blue
    analogWrite(redledPin, 0);
    analogWrite(blueledPin, 250);
    analogWrite(greenledPin, 0);
    break;
    
    case 4: //green
    analogWrite(redledPin, 0);
    analogWrite(blueledPin, 0);
    analogWrite(greenledPin, 250);
    break;
    
    case 5: //aqua
    analogWrite(redledPin, 0);
    analogWrite(blueledPin, 250);
    analogWrite(greenledPin, 250);
    break;
    
    case 6: //yellow
    analogWrite(redledPin, 250);
    analogWrite(blueledPin, 0);
    analogWrite(greenledPin, 250);
    break;
    
    case 7: //purple
    analogWrite(redledPin, 250);
    analogWrite(blueledPin, 250);
    analogWrite(greenledPin, 0);
    break;
   }
}