Add colorized output, compatible with/without -a, --all.
Add colorized output, compatible with/without -a, --all.

godfreyy/howdoi,zhengzhihust/howdoi,Xuefeng-Zhu/howdoi,gleitz/howdoi,wujinbin/howdoi,allengaller/howdoi,chrisspen/howdou,q1ang/howdoi,allengaller/howdoi,nju520/howdoi,zhengzhihust/howdoi,Xuefeng-Zhu/howdoi,q1ang/howdoi,prasadph/howdoi,jasonfellows/howdoi,stallman-cui/howdoi,nju520/howdoi,godfreyy/howdoi,wujinbin/howdoi,prasadph/howdoi,kv9699/howdoi,gleitz/howdoi,chrisspen/howdou,JackNokia/howdoi,JackNokia/howdoi,kv9699/howdoi,jasonfellows/howdoi,stallman-cui/howdoi