No, they don't have uniforms. College of Engineering Trivandrum doesn't have any particular uniform. They can wear colour dress in college.

College of Engineering Chengannur has uniforms for its students and is very strict about the same as well. Also college of engineering, Trivandrum has uniform. I am not sure about anymore available. So mostly apart from this two, rest all colleges dont have any uniform as very less number of colleges have these strict guidelines for the graduation courses. The only criteria everywhere will be to keep wearing the identity cards.

Refer to the site below for more detailed information.. It has all the available government colleges of engineering in Kerala

https://engineering.careers360.com/colleges/ranking/top-government-engineering-colleges-in-kerala

Best wishes. Thank you.