With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
total-color-page-count
total-color-page-count
1.3.6.1.4.1.11.2.3.9.4.2.1.4.1.2.7
Total number of color pages printed by the device. Additional information: Any page with one or more color pixels is counted as a color page. Pages that only contain black marks are not counted by this object. The counter will roll over to zero after 4,294,967,296 pages. Each side of a duplexed sheet of media will be counted independently based on the criteria listed above.
Back to clj8500 MIB page.
IPHost Network monitor allows you to monitor total-color-page-count on Hewlett Packard device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.