HiTechnic Color2 constants

HT_CMD_COLOR2_50HZ HT_CMD_COLOR2_60HZ HT_CMD_COLOR2_ACTIVE HT_CMD_COLOR2_BLCAL HT_CMD_COLOR2_FAR HT_CMD_COLOR2_LED_HI HT_CMD_COLOR2_LED_LOW HT_CMD_COLOR2_NEAR HT_CMD_COLOR2_PASSIVE HT_CMD_COLOR2_RAW HT_CMD_COLOR2_WBCAL

#define HT_CMD_COLOR2_LED_LOW   0x4C Set the Color2 sensor to LED low mode