EXT and STD control modes offer fine control of pan and tilt. In each case, the main control channel sets the first 8 bits (the most significant byte or MSB), and the fine channel sets the second 8 bits (the least significant byte or LSB) of the bit control byte. In other words, the fine channel works within the position set by the main channel. Controlling color Color wheel effects The electronic virtual color wheel effects available for the Beam and the Aura give the convenience and feel of a mechanical color wheel and let you snap between 33 different full LEE-referenced color presets. You can also scroll continuously forwards or backwards through the colors or display random colors at variable speed. The approximate RGB equivalents of the color wheel colors are given in LEE colors and RGB equivalents on page 29.