docs: public final int getIndexNearest(int pRed, int pGreen, int pBlue) {
          // NOTE: the third line in expression for blue is shifting DOWN not UP.
          return inverseRGB[((pRed << (2 * QUANTBITS - TRUNCBITS)) & QUANTMASK_RED) +
                  ((pGreen << (/* 1 * */ QUANTBITS - TRUNCBITS)) & QUANTMASK_GREEN) +
                  ((pBlue >> (TRUNCBITS)) & QUANTMASK_BLUE)] & 0xFF;
      }