word Color is not showing

I'm using Red Hat Enterprise Linux (RHEL) 6.7, and I'm facing an issue with command output colors. For example, when I run df -h, the -h option should be colored, but it appears white. Similarly, when I run ip addr, the IP address (e.g., 192.122.234.333) should be colored, but it’s not. How can I fix this to enable colored output for these commands?