I am new to coding and just made the worse coding architecture ever made so I apologize for the mess.

I am trying to get the color value from my myRandomColorPalette object to color the tile I will click on in myQuiltGrid by assigning it to the variable called tileClr. I think it's an easy get and set methods thing but I just don't know how to do it (I have tried different syntax and it does not work: see the commented out 2 bits of code in the RandomColorPalette class).

I also would like to rotate the tile pattern once it is on the my quilt grid (see void rotatePattern that is commented out in that same section).

QuiltGrid myQuiltGrid;

PFont fontInstructionsPlain; // create a variable to load the font for the instructions in plain font style
PFont fontInstructionsItalic; // create a variable to load the font for the instructions in italic font style

Instructions instruction;

PImage [] hawaiianPattern = new PImage [4]; // declare a variable that stores an array of quilting patterns images from clip art

Pattern [] myPatternTile= new Pattern [4];

RandomColorPalette myRandomColorPalette;

Stitch myFlatStitch;
Stitch myDoubleFlatStitch;
Stitch myCrossStitch;
Stitch myDottedStitch;
/*Stitch myWavyStitch;*/


void setup() {  // call the setup function to define initial enviroment properties

  size(900, 700);  // set the canvas size at 800 pixels by 800 pixels
  background(225, 225, 255); // set background color to light gray

  myQuiltGrid= new QuiltGrid (color(255, 211, 232), 100, 200, 200);

  fontInstructionsPlain=loadFont("SansSerif.plain-48.vlw");  // load the font used for the text in a data file attached to this file
  fontInstructionsItalic=loadFont("SansSerif.italic-48.vlw");  // load the font used for the text in a data file attached to this file
  textFont (fontInstructionsPlain, 16);  // set the loaded font as the current one to use

instruction=new Instructions (color(0,0,0), 0,0,0);

  for (int q = 0; q < hawaiianPattern.length; q++) {  // create an array that loads the array of quilt patterns as numbered files
    hawaiianPattern[q] = loadImage("pattern" + (q+1) + ".gif");  // load each quilt pattern individually based on its numbered file
  }  // end the for loop for loading the array of quilt patterns as numbered files

  for (int q = 0; q < myPatternTile.length; q++) {  // create an array that initializes each hawaiian pattern tile
    myPatternTile[q]=new Pattern (color(255, 255, 255), 100, 0, 150+q*150, hawaiianPattern[q]);
  }

  myRandomColorPalette=new RandomColorPalette (color(255, 255, 255), 100, 0, 0);

  myFlatStitch=new Stitch (color(250, 100, 90), 100, 200, 0, 10, 6.6);
  myDoubleFlatStitch=new Stitch (color(250, 100, 90), 100, 400, 0, 10, 5.0, 6.6);
  myDottedStitch=new Stitch (color(227, 208, 140), 100, 600, 0, 10, 4);
  myCrossStitch=new Stitch (color(227, 101, 221), 100, 800, 0, 10);
 
    myQuiltGrid.display();
}  // end the setup function


void draw () {  // call the draw function

  myQuiltGrid.testMousePressed(mouseX, mouseY);

  myRandomColorPalette.display();

  myFlatStitch.display(); // draws the box for the flat stitch
  myDoubleFlatStitch.display ();
  myDottedStitch.display();
  myCrossStitch.display();
 

  myFlatStitch.showFlatStitch(10, 6.6);
  myDoubleFlatStitch.showDoubleFlatStitch (10, 5.0, 6.6);
  myDottedStitch.showDottedStitch(10, 4);
  myCrossStitch.showCrossStitch(10);
 

  myFlatStitch.drawFlatStitch(10, 6.6);
  myDoubleFlatStitch.drawDoubleFlatStitch (10, 5.0, 6.6);
  myDottedStitch.drawDottedStitch(10, 4);
  myCrossStitch.drawCrossStitch (10);
 

  for (int q = 0; q < myPatternTile.length; q++) {  // create an array that loads the array of quilt patterns as numbered files
    myPatternTile[q].showPatternTiles();
    myPatternTile[q].tintPattern ();  
   // myPatternTile[q].rotatePattern();
  }
   
  instruction.write();
 
  }  // end the draw function
 
 
  abstract class CanvasBoxes {

  color boxClr;
  float sizeOfSquares;
  float boxPosX;
  float boxPosY;

  CanvasBoxes (color tempboxClr, float tempsizeOfSquares, float tempBoxPosX, float tempBoxPosY) {

    boxClr=tempboxClr;
    sizeOfSquares=tempsizeOfSquares;
    boxPosX=tempBoxPosX;
    boxPosY=tempBoxPosY;
  }  // end of the constructor


  boolean mouseClickOverBox () {
    if (mousePressed && ((mouseX>boxPosX) && (mouseX<boxPosX+sizeOfSquares) && (mouseY>boxPosY) && (mouseY<boxPosY+sizeOfSquares))) {
      return true;
    }     
    else {      
      return false;
    }
  }  // end of MouseClickOverBox function()
 
}  // end of abstract CanvasBoxes class


class Pattern extends CanvasBoxes {

  PImage quiltPattern;


  Pattern(color tempboxClr, float tempsizeOfSquares, float tempBoxPosX, float tempBoxPosY, PImage tempQuiltPattern) {

    super (tempboxClr, tempsizeOfSquares, tempBoxPosX, tempBoxPosY);

    boxClr=tempboxClr;
    sizeOfSquares=tempsizeOfSquares;
    quiltPattern=tempQuiltPattern;
    boxPosX=tempBoxPosX;
    boxPosY=tempBoxPosY;
  }  // end of the constructor


  void showPatternTiles() {

    image (quiltPattern, boxPosX, boxPosY);
   
  }  // end of showPatternTiles () mode


  void tintPattern () {

    if (mouseClickOverBox()) {
      tint (color(random(175, 255), random(175, 255), random(175, 255)));
    }
  }
  } // end of Pattern class
 
 
  class QuiltGrid extends CanvasBoxes {

  ArrayList GridBoxes;
  int tileNumber;

  QuiltGrid (color tempboxClr, float tempsizeOfSquares, float tempBoxPosX, float tempBoxPosY) {

    super (tempboxClr, tempsizeOfSquares, tempBoxPosX, tempBoxPosY);

    boxClr=tempboxClr;
    sizeOfSquares=tempsizeOfSquares;
    boxPosX=tempBoxPosX;
    boxPosY=tempBoxPosY;
    GridBoxes = new ArrayList();
  }  // end of the constructor


  // inner class (class inside QuiltGrid class)

  class myQuiltBoxes {

    float quiltBoxX;
    float quiltBoxY;
    float quiltBoxW;
    float quiltBoxH;
    color tileClr;

    myQuiltBoxes(float tempQuiltBoxX, float tempQuiltBoxY, float tempQuiltBoxW, float tempQuiltBoxH) {
      quiltBoxX = tempQuiltBoxX;
      quiltBoxY = tempQuiltBoxY;
      quiltBoxW = tempQuiltBoxW;
      quiltBoxH = tempQuiltBoxH;
      rect(quiltBoxX, quiltBoxY, quiltBoxW, quiltBoxH);
    }

    void applyPatternTile() {
      image (hawaiianPattern[tileNumber], quiltBoxX, quiltBoxY);
    }

      void colorTheTile () {
      tileClr=200;
      fill (tileClr);
      rect(quiltBoxX, quiltBoxY, quiltBoxW, quiltBoxH);
      }
     
      /*  void rotatePattern () {
    if ((keyPressed) && (key == 'r' || key == 'R')&& mousePressed) {
      pushMatrix();
      translate(boxPosX+sizeOfSquares/2, boxPosY+sizeOfSquares/2);
      rotate (radians(90));
      image (hawaiianPattern[tileNumber], quiltBoxX, quiltBoxY);
      popMatrix(); 
    }*/
     
  }  // end inner class   (class inside QuiltGrid class)



  boolean rollOverQuiltGrid() {
    if (mouseX >=  boxPosX && mouseY >=  boxPosY) {
      return true;
    }
    else {
      return false;
    }
  }  // end of rollOverQuiltGrid



  void testMousePressed(int x, int y) {

    if (mousePressed) {
        for (int i=0; i < GridBoxes.size(); i++) {
        if (x >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX) && x <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxW)) && y >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY) && y <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxH)))
          ((myQuiltBoxes)GridBoxes.get(i)).colorTheTile ();
      }
    }



    if ((keyPressed) && (key == '1') && mousePressed) {
      tileNumber=0;
      for (int i=0; i < GridBoxes.size(); i++) {
        if (x >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX) && x <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxW)) && y >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY) && y <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxH)))
          ((myQuiltBoxes)GridBoxes.get(i)).applyPatternTile();
      }
    }


    if ((keyPressed) && (key == '2') && mousePressed) {
      tileNumber=1;
      for (int i=0; i < GridBoxes.size(); i++) {
        if (x >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX) && x <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxW)) && y >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY) && y <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxH)))
          ((myQuiltBoxes)GridBoxes.get(i)).applyPatternTile();
      }
    }


    if ((keyPressed) && (key == '3') && mousePressed) {
      tileNumber=2;
      for (int i=0; i < GridBoxes.size(); i++) {
        if (x >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX) && x <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxW)) && y >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY) && y <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxH)))
          ((myQuiltBoxes)GridBoxes.get(i)).applyPatternTile();
      }
    }


    if ((keyPressed) && (key == '4') && mousePressed) {
      tileNumber=3;
      for (int i=0; i < GridBoxes.size(); i++) {
        if (x >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX) && x <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxX)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxW)) && y >= (((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY) && y <= ((((myQuiltBoxes)GridBoxes.get(i)).quiltBoxY)+(((myQuiltBoxes)GridBoxes.get(i)).quiltBoxH)))
          ((myQuiltBoxes)GridBoxes.get(i)).applyPatternTile();
      }
    }
  }


  void display () {

    for (float i=boxPosX;i<width;i+=sizeOfSquares) {
      for (float j=boxPosY;j<height;j+=sizeOfSquares) {
        fill(boxClr);
        myQuiltBoxes b = new myQuiltBoxes(i, j, sizeOfSquares, sizeOfSquares);
        GridBoxes.add(b);
        //((myQuiltBoxes)GridBoxes.get()).printme();
      }
    }
  }  // end of the display function
}  // end of the Grid class

class RandomColorPalette extends CanvasBoxes {

  RandomColorPalette(color tempboxClr, float tempsizeOfSquares, float tempBoxPosX, float tempBoxPosY) {

    super (tempboxClr, tempsizeOfSquares, tempBoxPosX, tempBoxPosY);

    boxClr=tempboxClr;
    sizeOfSquares=tempsizeOfSquares;
    boxPosX=tempBoxPosX;
    boxPosY=tempBoxPosY;
  } 


/*getTileClr ()  {
  return boxClr;
} */

 
/*void setTileClr (color boxClr)  {
  tileClr=boxClr;
}*/


  void display () {
    
   
    fill(boxClr);
    rect (boxPosX, boxPosY, sizeOfSquares, sizeOfSquares);
      if (mouseClickOverBox()) {
      boxClr=(color(random(125, 255), random(125, 255), random(125, 255))); 
      fill (boxClr);
      rect (boxPosX, boxPosY, sizeOfSquares, sizeOfSquares);
    }
  }  // end of the display () function
} // end of the RandomColorPalette class

 
NOTE: I LEFT OUT TWO CLASSES OF MY CODE BECAUSE THEY DID NOT SEEM RELEVANT