normal semen colour ranges from clear to slight yellow in colour..
If it is yellow it indicates presence of infection..
If it is pinkish to reddish it indicates presence of blood in the semen..
If you are worrying about the amber coloured semen..,Then go for semen analysis
Presence of pus cells and more ph that is alkaline indicates presence of infection.
If any abnormality is there in the report consult physician for solution