docs: private byte[] makePalette(int pRed, int pGreen, int pBlue) {
          byte[] palette = new byte[PLTE_CHUNK_LENGTH + 4];
          System.arraycopy(PNG_IMG, PLTE_CHUNK_START, palette, 0, PLTE_CHUNK_LENGTH);
  
          palette[RED_IDX]   = (byte) pRed;
          palette[GREEN_IDX] = (byte) pGreen;
          palette[BLUE_IDX]  = (byte) pBlue;
  
          updateCRC(palette, 0, PLTE_CHUNK_LENGTH);
  
          return palette;
      }