Should one obey his mother even if she was wrong?

Obeying one`s mother is mandatory in matters that are beneficial to her and as long as she drive her childrennot to commit a sin.

Is it permissible for a woman to wear colored lenses?

All Perfect Praise is due to Allah, The Lord of The Worlds.

Wearing colored lenses for treatment is permissible, and wearing them as an adornment is also permissible, provided that she isn`t seen while having them on by non-Mahrams (Marriageable men). And Alalh Knows Best.

What should one who made an intention, at night, to make up for a missed fasting day, but broke his fast on the next day?

One who started making up a missed fasting day, then broke his/her fast without a legitimate reason is considered sinful, and is only obliged to make up for the missed fasting days. And Allah Knows Best.

I`m a pious Muslim woman, but my husband isn`t, what should I do?

You should exercise patience, make supplication that Allah guides him to the straight path, and keep advising him kindly.