Hi,
The colored line is a bad connection between mainboard to screen ( broken or ripped cable, dirt, ...)
Or a failing GPU.
in case of juice spill , you need to clean the main board immediately with isopropyl alcohol. is it long ago the spill?
try to clean it anyway... but do it propperly , use enough of isopropyl ( you can buy this at a drugstore...)
clean every connection.
This is a good time to clean the fan en colling pads as well. check transistors an capicitators for leak also check the chips on the mainboard. clean the ram would help but i think it will be to late , try with other ram after cleaning.
Most of the time the keyboard is dead to.. replace this as well.
Kind regards,
kevin